12 Days of Christmas
851
Abundant Numbers
721
Arithmetic Numbers
607
794
Arrows
705
Ascending Primes
880
Christmas Trees
926
Collatz
797
CSS Colors
822
DFA Simulator
855
Diamonds
903
Divisors
664
933
Evil Numbers
552
981
Factorial Factorisation
464
Fibonacci
927657764934
Fizz Buzz
898
814891
Foo Fizz Buzz Bar
901
Fractions
879
Intersection
588
Leap Years
701
697864
Levenshtein Distance
767
Leyland Numbers
875
Look and Say
969
Medal Tally
868
Morse Decoder
619
Musical Chords
860
416
Niven Numbers
856
Niven Numbers (Long)
814
902
Odious Numbers
546
979
Ordinal Numbers
577
738
Pernicious Numbers
764
Poker
879
399
Prime Numbers
531
Quine
1,000
946
Recamán
776
Repeating Decimals
390
Reverse Polish Notation
693
Rock-paper-scissors-Spock-lizard
846
Sierpiński Triangle
698
Spelling Numbers
Ten-pin Bowling
888
Tongue-twisters
714
United States
896
945
Vampire Numbers
660
φ
746
√2
796