20 X+Y=Z - but in which base? 2016-03-24T18:06:42.737
20 Zipper multiplication 2016-12-09T07:50:18.870
20 Linear interpolation of the Fibonacci sequence 2017-04-28T16:14:51.507
20 Sigmafy the expression 2017-05-13T11:05:03.783
20 Is it a Cyclic number? 2017-05-28T23:57:33.987
20 Pascal's Rhombus 2017-07-05T22:18:42.050
20 Make two numbers co-prime while preserving their least common multiple 2017-09-15T12:38:00.470
20 Given a number, print out its "collective sum" 2018-02-24T00:02:07.603
20 Ten-pin bowling score - World Bowling edition 2018-03-26T04:08:10.933
20 Golfing out the haters 2018-05-11T23:13:15.327
20 Strange Addition 2018-11-15T14:37:07.277
20 Dirichlet Convolution 2018-11-16T19:33:58.710
20 Given an input, print all exponents where the base and power sum to the input 2018-11-28T04:00:27.633
20 Power-Ending Patterns 2020-02-02T12:52:04.993
19 Bowl Filled with Water 2015-07-30T16:51:38.493
19 Calculate Standard Deviation 2015-10-15T17:11:46.067
19 Dames, do some math! 2015-10-22T11:48:29.497
19 Calculate the bounded cumulative sum of a vector 2015-10-24T21:32:44.260
19 Reverse and square 2015-11-29T18:34:42.417
19 Sum the odd square numbers less than N 2016-04-21T11:49:35.973
19 The Camouflage Color Changing Chameleon Challenge 2016-07-08T19:23:32.907
19 Print the digital root 2016-10-27T13:56:38.907
19 Contradictory Polyglots 2017-04-18T10:01:07.187
19 Opposite of the digital root! 2017-05-29T00:39:57.520
19 Three triangular numbers 2017-07-17T12:44:18.640
19 Real base conversion 2017-08-17T09:30:36.037
19 Compute height of Bowl Pile 2019-08-28T13:15:12.733
19 Calculate Landau's function 2019-08-30T16:12:31.470
18 Sum the time durations 2014-12-11T09:59:53.817
18 Calculate the volume of an object 2016-03-08T18:51:18.567
18 Count Up, Replace, Repeat! 2016-06-21T07:58:41.370
18 Plus and Times, Ones and Nines 2016-12-06T10:16:48.517
18 Arithmetic mean of prime Fibonacci Numbers up to the x Fibonacci Number 2017-03-04T17:53:22.580
18 Robbers - square times square root 2017-04-03T12:45:28.363
18 Summing? That's my forte! 2017-04-09T08:35:00.237
18 LCM of Rational Numbers 2017-06-18T02:24:18.043
18 Reverse Maths Cycles 2017-09-11T19:28:27.400
18 Am I a golfy array? 2017-10-18T18:29:21.707
18 Olympic Rings Sequence 2018-01-22T13:44:29.193
18 Divide the work 2018-08-15T20:48:50.610
18 Start from ones 2019-08-22T09:39:11.263
17 Finding sum-free partitions 2015-11-09T18:18:12.623
17 Digital Cellular Automata 2015-11-19T07:23:18.237
17 Seven's Cycle Sum Sequence 2015-12-07T04:00:33.030
17 Output the Partial Products 2015-12-30T00:33:20.627
17 Sort a concatenated sequence 2016-01-05T10:50:14.097
17 Who's gonna win the football game? 2016-02-07T20:43:04.913
17 Recursive 2x2 determinant 2016-02-09T11:46:06.417
17 A curious prime fraction formula 2016-03-23T14:44:04.013
17 Integer-Digits of the Arithmetic-Tables 2017-04-03T06:53:11.540
17 Create an omnifix calculator 2017-07-27T11:25:43.753
17 Exponentiation to multiplication to addition 2017-10-04T16:13:15.647
17 Least integer as a product of given factors 2017-10-09T17:54:43.527
17 Calculate power series result 2018-07-30T20:19:16.113
17 The Written Digits Sequence 2018-10-22T17:21:50.297
17 Spot all (anti)diagonals with duplicated values 2019-01-25T10:31:30.437
16 Visualize long division with ASCII art 2011-03-14T21:15:29.067
16 Undo the square roots 2014-11-26T04:19:29.097
16 Unwise bit operations 2015-04-02T22:10:49.087
16 Express a number - a modern "Des Chiffres et des Lettres" 2015-05-04T19:54:59.330
16 Add and multiply perplexing numbers 2016-01-09T15:44:10.797
16 Arbitrary Precision Integer Division 2016-02-11T04:11:15.687
16 Minimum Scalar Product 2016-03-12T03:18:30.507
16 Find the n-th perfect power! 2016-05-01T09:16:59.830
16 Jam don't add like that 2016-06-03T00:14:10.697
16 Raise integer x to power x, without exponentiation built-ins 2017-05-09T22:13:50.030
16 Counting N-bit integer multiplication overflows 2017-06-08T05:43:54.587
16 Spin the Calculator 2017-06-22T14:41:26.037
16 2D partitioned cumulative sum 2017-07-26T23:07:11.837
16 Divisible by 1000003? Easy, just multiply the last digit by 300001 and add! 2017-08-19T16:29:37.720
16 An Array of Challenges #3: Moving Averages 2017-11-05T15:46:25.740
16 Be as evil as possible 2017-12-23T16:07:11.077
16 Number of surjections 2018-04-20T15:43:49.267
16 Recover the power from the prime power 2018-06-20T23:37:26.540
16 Find the percentage 2019-09-29T00:04:18.410
16 Average Two Letters 2019-11-09T14:03:36.610
15 Implement division 2011-02-04T10:12:10.190
15 Find the nearest clock hands 2015-07-29T10:41:47.937
15 Averages of Angles 2015-10-12T20:12:26.323
15 Simple Task Solved Thrice 2015-11-26T19:00:45.497
15 How to weight loss easily? 2016-07-21T05:44:58.360
15 Division of not so little numbers 2016-10-12T19:32:12.103
15 Make mathematics with minimal matchsticks 2017-03-28T16:34:54.697
15 Detect the Nearly Perfect Licence Plates 2017-04-08T15:27:50.803
15 The Uncommon Factor Number 2017-09-08T14:46:25.870
15 Two steps forward and one step back 2018-03-26T13:02:36.007
14 No branching please 2013-09-11T18:36:05.143
14 It’s time to do the math 2014-09-21T10:53:30.110
14 Make any number by repeatedly adding 2 numbers 2014-12-28T19:45:56.707
14 Sum the powers to n 2015-01-17T03:18:42.227
14 Out-of-Control Rounding Errors 2015-04-07T17:30:20.913
14 How many squares, cubes, fourth powers, etc. do I need to sum to n? 2015-12-01T18:22:09.953
14 Express a number with only 0-9 and the four operations 2016-03-30T12:48:13.407
14 Produce Dürer's magic square 2016-10-31T22:07:29.807
14 Plus or minus polyglots! 2017-04-18T12:25:47.667
14 n * k = dd0d00d where d = ...? 2017-07-06T18:25:36.260
14 2 factors factorization 2017-12-02T22:18:04.037
14 Mod-balanced lists 2017-12-03T15:08:23.240
14 Match the Striking Clock 2018-01-05T08:17:19.900