12 Days of Christmas
827844
99 Bottles of Beer
592
Abundant Numbers
729
Arabic to Roman
629
Arrows
492
Christmas Trees
705
Cubes
547
Diamonds
598
Divisors
905830
Emirp Numbers
576
Emojify
358
Evil Numbers
769
Fibonacci
800806
Fizz Buzz
773714
Fractions
6401,000
Happy Numbers
646
Happy Numbers (Long)
735
Intersection
435
Kolakoski Constant
656
Kolakoski Sequence
634584
Leap Years
652
Leyland Numbers
913
Look and Say
552
Morse Decoder
117
Morse Encoder
128
Niven Numbers
688
Odious Numbers
800
Ordinal Numbers
711
Pangram Grep
837
Pascal’s Triangle
730
Pernicious Numbers
339
Prime Numbers
656689
Recamán
678
Rock-paper-scissors-Spock-lizard
599
Roman to Arabic
587
Seven Segment
558
Sierpiński Triangle
102
Smith Numbers
812
Tongue-twisters
662
United States
326
Vampire Numbers
468
Van Eck Sequence
494
λ
152
π
438
τ
438
φ
729
√2
729
𝑒
640629