12 Days of Christmas
440
99 Bottles of Beer
465
Abundant Numbers
698647
Arabic to Roman
447
Christmas Trees
618744
CSS Colors
257267
Cubes
499
Diamonds
523
Divisors
933863
Emirp Numbers
478511
Emojify
Evil Numbers
836719
Fibonacci
935938
Fizz Buzz
955891868
Happy Numbers
582459
Intersection
513
Kolakoski Constant
380436
Kolakoski Sequence
864811
Leap Years
831746
Levenshtein Distance
460
Leyland Numbers
765719
Look and Say
875
Lucky Tickets
478
Morse Decoder
486
Morse Encoder
559
Niven Numbers
881782
Odious Numbers
834718
Ordinal Numbers
631688
Pangram Grep
796
Pascal’s Triangle
846
Pernicious Numbers
686677
Prime Numbers
892813
Quine
890
Recamán
780712
Rock-paper-scissors-Spock-lizard
413
Roman to Arabic
522
Rule 110
653
Seven Segment
417
Sierpiński Triangle
697809
Tongue-twisters
354
Vampire Numbers
422415
λ
460404
π
τ
φ
609
√2
𝑒
615