12 Days of Christmas
440
99 Bottles of Beer
414
Abundant Numbers
698647
Arabic to Roman
447
Christmas Trees
617743
CSS Colors
256266
Cubes
499
Diamonds
522
Divisors
933863
Emirp Numbers
478511
Emojify
Evil Numbers
836718
Fibonacci
935938
Fizz Buzz
955891868
Happy Numbers
582459
Intersection
511
Kolakoski Constant
380436
Kolakoski Sequence
864810
Leap Years
831745
Levenshtein Distance
460
Leyland Numbers
765718
Look and Say
874
Lucky Tickets
477
Morse Decoder
494
Morse Encoder
559
Niven Numbers
881782
Odious Numbers
834717
Ordinal Numbers
630688
Pangram Grep
795
Pascal’s Triangle
845
Pernicious Numbers
686676
Prime Numbers
892813
Quine
889
Recamán
780711
Rock-paper-scissors-Spock-lizard
415
Roman to Arabic
522
Rule 110
652
Seven Segment
417
Sierpiński Triangle
697809
Tongue-twisters
354
Vampire Numbers
422414
λ
460404
π
658
τ
534
φ
609401
√2
432
𝑒
615