12 Days of Christmas
378398
99 Bottles of Beer
336
Abundant Numbers
688
Arabic to Roman
437
Arrows
568
Christmas Trees
603
Cubes
381
Diamonds
490
Divisors
844749
Emirp Numbers
458
Emojify
332
Evil Numbers
755
Fibonacci
789786
Fizz Buzz
701632
Fractions
528991
Happy Numbers
491
Happy Numbers (Long)
605
Intersection
309
Kolakoski Constant
543
Kolakoski Sequence
601547
Leap Years
642
Leyland Numbers
755
Look and Say
510
Morse Decoder
146
Morse Encoder
161
Niven Numbers
675
Odious Numbers
784
Ordinal Numbers
564
Pangram Grep
691
Pascal’s Triangle
659
Pernicious Numbers
331
Prime Numbers
643578
Recamán
598
Rock-paper-scissors-Spock-lizard
437
Roman to Arabic
430
Seven Segment
398
Sierpiński Triangle
131
Smith Numbers
622
Tongue-twisters
633
United States
227
Vampire Numbers
333
Van Eck Sequence
465
λ
86
π
425
τ
423
φ
701
√2
702
𝑒
624605