12 Days of Christmas
942
99 Bottles of Beer
782
Abundant Numbers
646598
Abundant Numbers (Long)
749
Arithmetic Numbers
567
ASCII Table
816
Catalan Numbers
194
Catalan’s Constant
65
Christmas Trees
779
Collatz
792792
CSS Colors
960
Cubes
578
Day of Week
1,000
Diamonds
410
Divisors
621876
Emirp Numbers
394
Emojify
281
Evil Numbers
407
Evil Numbers (Long)
457
Farey Sequence
474
Fibonacci
843934
Fizz Buzz
993929469
Foo Fizz Buzz Bar
971899
Fractions
431
Happy Numbers
466
Happy Numbers (Long)
430
Intersection
413
Kolakoski Constant
73
Kolakoski Sequence
18
Leap Years
987
Leyland Numbers
462
Look and Say
475
Lucky Numbers
505
Morse Decoder
362
Niven Numbers
703
Niven Numbers (Long)
934
Number Spiral
348
Odious Numbers
405
Odious Numbers (Long)
457
Ordinal Numbers
644
Pangram Grep
600
Pascal’s Triangle
568
Pernicious Numbers
216
Prime Numbers
594
Prime Numbers (Long)
315
Quine
949
Recamán
481
Rijndael S-box
169
Rock-paper-scissors-Spock-lizard
551
Roman to Arabic
428
Seven Segment
287
Sierpiński Triangle
246
Sudoku
285
Tongue-twisters
625
United States
298128
Vampire Numbers
124
π
50
τ
50