12 Days of Christmas
436
99 Bottles of Beer
475
Abundant Numbers
667583
Abundant Numbers (Long)
789
Arithmetic Numbers
558
ASCII Table
783
Catalan Numbers
205
Catalan’s Constant
68
Christmas Trees
803
Collatz
783679
CSS Colors
971
Cubes
476
Day of Week
1,000
Diamonds
424
Divisors
640844
Emirp Numbers
255
Emojify
289
Evil Numbers
424
Evil Numbers (Long)
483
Farey Sequence
506
Fibonacci
871947
Fizz Buzz
1,000855481
Foo Fizz Buzz Bar
944725
Fractions
469
Happy Numbers
321
Happy Numbers (Long)
442
Intersection
431
Kolakoski Constant
73
Kolakoski Sequence
19
Leap Years
1,000
Leyland Numbers
492
Look and Say
504
Lucky Numbers
524
Morse Decoder
310
Niven Numbers
718
Niven Numbers (Long)
974
Number Spiral
326
Odious Numbers
421
Odious Numbers (Long)
483
Ordinal Numbers
675
Pangram Grep
627
Pascal’s Triangle
606
Pernicious Numbers
222
Prime Numbers
622
Prime Numbers (Long)
337
Quine
1,000
Recamán
500
Rijndael S-box
111
Rock-paper-scissors-Spock-lizard
438
Roman to Arabic
437
Seven Segment
252
Sierpiński Triangle
270
Sudoku
192
Tongue-twisters
368
United States
30788
Vampire Numbers
87
π
53
τ
53