12 Days of Christmas
431
99 Bottles of Beer
467
Abundant Numbers
641574
Abundant Numbers (Long)
742
Arithmetic Numbers
516
ASCII Table
743
Catalan Numbers
195
Catalan’s Constant
63
Christmas Trees
772
Collatz
744666
CSS Colors
951
Cubes
458
Day of Week
1,000
Diamonds
404
Divisors
622831
Emirp Numbers
248
Emojify
277
Evil Numbers
407
Evil Numbers (Long)
458
Farey Sequence
474
Fibonacci
844935
Fizz Buzz
986848438
Foo Fizz Buzz Bar
908715
Fractions
432
Happy Numbers
310
Happy Numbers (Long)
413
Intersection
378
Kolakoski Constant
68
Kolakoski Sequence
18
Leap Years
985
Leyland Numbers
462
Look and Say
476
Lucky Numbers
489
Morse Decoder
275
Niven Numbers
695
Niven Numbers (Long)
928
Number Spiral
298
Odious Numbers
406
Odious Numbers (Long)
458
Ordinal Numbers
637
Pangram Grep
598
Pascal’s Triangle
568
Pernicious Numbers
216
Prime Numbers
595
Prime Numbers (Long)
317
Quine
951
Recamán
479
Rijndael S-box
108
Rock-paper-scissors-Spock-lizard
419
Roman to Arabic
411
Seven Segment
237
Sierpiński Triangle
259
Sudoku
173
Tongue-twisters
363
United States
27986
Vampire Numbers
81
π
51
τ
50