12 Days of Christmas
682
Abundant Numbers
722
Arithmetic Numbers
608
797
Arrows
707
Ascending Primes
884
Christmas Trees
926
Collatz
799
CSS Colors
546
DFA Simulator
854
Diamonds
903
Divisors
665
933
Evil Numbers
431
982
Factorial Factorisation
459
Fibonacci
927658766935
Fizz Buzz
898
814891
Foo Fizz Buzz Bar
903
Fractions
882
Intersection
590
Leap Years
702
699865
Levenshtein Distance
767
Leyland Numbers
867
Look and Say
969
Medal Tally
854
Morse Decoder
606
Musical Chords
860
413
Niven Numbers
858
Niven Numbers (Long)
815
904
Odious Numbers
446
980
Ordinal Numbers
578
729
Pernicious Numbers
513
Poker
887
394
Prime Numbers
534
Quine
1,000
947
Recamán
776
Repeating Decimals
392
Reverse Polish Notation
693
Rock-paper-scissors-Spock-lizard
843
Sierpiński Triangle
699
Spelling Numbers
Ten-pin Bowling
877
Tongue-twisters
715
United States
900
891
Vampire Numbers
661
φ
747
√2
797