12 Days of Christmas
895
Abundant Numbers
690
Arithmetic Numbers
587
916
Arrows
766
Ascending Primes
864
Christmas Trees
904
Collatz
879
CSS Colors
822
DFA Simulator
718
Diamonds
881
Divisors
632
979
Evil Numbers
421
980
Factorial Factorisation
453
Fibonacci
905649758932
Fizz Buzz
892
809973
Foo Fizz Buzz Bar
902
Fractions
882
Intersection
799
Leap Years
681
645863
Levenshtein Distance
761
Leyland Numbers
824
Look and Say
916
Medal Tally
826
Morse Decoder
621
Musical Chords
845
565
Niven Numbers
819
Niven Numbers (Long)
775
895
Odious Numbers
429
976
Ordinal Numbers
581
895
Pernicious Numbers
493
Poker
924
726
Prime Numbers
621
Quine
986
945
Recamán
736
Repeating Decimals
534
Reverse Polish Notation
693
Rock-paper-scissors-Spock-lizard
881
Sierpiński Triangle
674
Spelling Numbers
Ten-pin Bowling
901
Tongue-twisters
930
United States
899
842
Vampire Numbers
888
φ
740
√2
770