29 Compute the Resistance of a 4 Band Color Coded Resistor 2015-05-26T02:45:58.373

29 Chunky vs. Smooth Strings 2015-07-14T02:40:34.627

29 Integer Complexity 2015-11-17T00:31:40.497

29 Very Simple Grid Marks 2015-11-29T01:50:35.127

29 Simplify a square root 2016-06-26T00:00:55.153

29 Dutch Burgerservicenummer (BSN) eleven-test 2016-12-08T08:15:32.233

29 Fill in an increasing sequence with as many numbers as possible 2017-03-16T02:08:28.937

29 Pascal's Column Sums 2017-03-16T14:27:12.067

29 Primitive Pythagorean Triples 2017-07-25T13:20:56.090

28 Illustrate the square of a binomial 2015-10-19T20:50:18.037

28 One-zero dividend 2016-02-28T15:11:27.560

28 Find the smallest number bigger than the input whose digital sum is the input 2016-06-01T08:21:23.980

28 Sum It Up with a Digital Triangle 2016-06-10T00:19:42.610

28 Simple integer operation calculator 2016-08-28T22:51:52.017

28 String Distance 2016-09-17T07:01:49.373

28 Terra Mystica: Cycling Power 2017-03-06T20:10:37.293

28 Operator that combines sum, product and difference between two numbers 2017-04-05T22:22:26.353

28 Help! My calculator malfunctions! 2017-09-04T09:19:57.480

28 Square pyramidal numbers 2017-10-17T11:53:55.173

28 Find number of ones to get a number using + and * 2018-01-28T00:38:32.183

27 Find i^n, given n 2014-11-21T15:43:53.413

27 Find the next 1-sparse binary number 2015-04-02T07:56:15.340

27 How many peaks in my mountain range? 2016-01-09T08:02:31.037

27 The plus-minus sequence 2016-04-03T20:29:56.413

27 Subtract the next numbers 2016-09-01T11:02:33.810

27 Which Day of Christmas is it? 2017-01-27T17:14:49.457

27 Solve an equation with (almost) any numbers you like 2017-03-09T18:56:03.540

27 Reciprocal of a number (1/x) 2017-03-30T17:53:40.550

27 Find Diffy Games 2017-03-30T18:48:27.120

27 Fake Statistics 2017-04-24T16:53:56.137

27 Does the sum of 2 numbers in the list equal the desired sum? 2017-05-16T11:58:47.293

27 How many carries do I need to add these two numbers? 2017-06-11T10:31:29.730

27 Find prime gaps 2017-08-03T18:31:13.517

27 A regex to match three consecutive integers iff the third integer is the sum of the first two 2017-12-13T15:32:28.333

26 Construct a Ladder 2015-03-02T17:24:09.880

26 1+1 = 10, 1+2 = 3 2016-01-03T13:41:03.753

26 Substring Sum Set 2016-07-22T00:36:48.300

26 Interquartile Mean 2016-07-24T13:47:12.610

26 One Expression, Many Values 2017-04-17T03:02:43.813

26 The Non-Zero Digital Product Challenge 2018-01-15T20:16:27.720

26 Diluted Integer Sums 2018-01-29T15:04:30.570

26 Golf A Free Lunch 2018-03-25T16:09:40.353

26 Who's next to me in the queue? 2019-12-08T20:12:58.900

25 "Write" a simple calculator without writing a single line of code 2015-07-26T13:18:22.397

25 Happy Rounded Pi Day 2016-03-14T12:24:10.963

25 Hofstadter Q-sequence 2016-07-29T15:25:42.053

25 Compute the kangaroo sequence 2016-10-16T05:18:37.537

25 Factorial digit sum 2016-11-23T14:14:05.517

25 Numbers divisible by the sum and product of their digits 2016-11-29T09:30:49.410

25 Transpile WordMath 2016-12-05T19:28:21.640

25 Zero-sum counting 2018-04-03T10:47:07.953

24 Shortest expression for {0, 3, 2, 5, 0, 3, 5, 1, 4, 6, 2, 4} 2014-07-16T21:46:37.600

24 Print all 3 by 3 sturdy squares 2015-10-21T22:47:52.950

24 Golf the xᵗʰ root of x 2016-02-23T03:54:15.370

24 24 and 12 Hour Times 2016-05-31T03:38:03.137

24 Climb a step to a prime 2017-06-09T09:48:01.160

24 Can even numbers become prime? 2017-08-03T14:58:44.887

24 Circularly moving sum 2017-08-27T10:38:27.737

23 Different Way Forward 2015-02-23T21:47:45.847

23 Calculating (3 + sqrt(5))^n exactly 2015-04-12T20:35:38.987

23 Iterated partial sums 2015-10-20T19:28:10.350

23 Co-primality and the number pi 2015-12-26T16:16:32.960

23 Electrical outlet 2016-02-04T12:17:32.387

23 Highly composite numbers 2016-02-29T22:26:04.020

23 Write a Morse Calculator 2016-03-06T16:45:53.533

23 Dijkstra's Challenge 2016-07-19T11:59:43.730

23 List all ordered partitions of n 2016-09-22T09:01:35.817

23 How fast is my Hot Wheels car? 2017-04-09T22:04:16.753

23 Is my Diffy game degenerate? 2017-04-12T17:53:47.127

23 Shortest Addition Chain 2017-05-27T08:35:19.093

23 Fastest algorithm to take the product of all subsets 2017-06-18T17:45:19.093

22 Un-round fractions 2014-09-23T12:19:19.143

22 Is q a quadratic residue of n? 2015-11-30T14:10:35.073

22 What's the point? 2016-01-29T21:55:37.400

22 Distance between two points in n-dimensional space 2016-01-30T12:50:41.727

22 Make big rocks into small rocks 2016-12-02T12:52:56.370

22 Let's do some location arithmetic! 2017-04-10T14:19:12.583

22 CSI: Minecraft Items 2017-06-07T06:17:57.047

22 Smallest multiple being run of 9 followed by optional run of 0 2017-07-06T05:46:55.990

22 What is the missing number (divisibility by 9) 2017-12-22T15:49:29.037

22 Subset Sum Orderings 2018-07-11T00:24:29.890

21 Four fours puzzle 2013-07-13T10:31:07.577

21 Outputting a base-proof expression 2015-09-16T15:55:34.460

21 Crazy Librarian's Amazing Sorting System 2015-09-16T16:12:58.293

21 Generate the minimal remainder sequence 2016-04-14T16:28:33.157

21 Calculate the sum of ILD 2016-06-30T08:21:44.560

21 Goldenness of an integer 2016-09-11T10:57:10.217

21 Range, Reverse, Sum! 2017-07-31T23:17:43.860

21 Pascal's Alternating Triangle 2017-08-09T13:40:53.167

21 Double a number's continued fraction 2018-07-08T23:21:38.523

21 Subtract the Folded Matrix 2019-06-17T11:24:16.880

21 Look mom! I made my own (Base 10) numeral system! 2019-08-08T15:08:06.610

20 Basic Calculator 2011-02-05T18:57:33.150

20 Additive Persistence 2011-03-25T23:18:31.437

20 Length of String Using Set Theory 2014-04-10T10:10:29.673

20 Evaluating Parentheses and Brackets as Integers 2015-06-05T05:57:01.110

20 Dead code elimination 2015-08-29T19:00:09.747

20 D&D point buy cost 2015-12-23T07:14:15.627

20 Parenthesize an expression 2015-12-24T21:02:48.547