12 Days of Christmas
684
Abundant Numbers
701
Arithmetic Numbers
583
790
Arrows
678
Ascending Primes
871
Christmas Trees
903
Collatz
796
CSS Colors
548
DFA Simulator
717
Diamonds
881
Divisors
632
911
Evil Numbers
422
980
Factorial Factorisation
448
Fibonacci
905650758932
Fizz Buzz
889
807889
Foo Fizz Buzz Bar
889
Fractions
876
Intersection
585
Leap Years
686
643862
Levenshtein Distance
754
Leyland Numbers
847
Look and Say
916
Medal Tally
815
Morse Decoder
599
Musical Chords
844
410
Niven Numbers
819
Niven Numbers (Long)
770
895
Odious Numbers
429
976
Ordinal Numbers
567
727
Pernicious Numbers
493
Poker
888
385
Prime Numbers
532
Quine
986
945
Recamán
733
Repeating Decimals
392
Reverse Polish Notation
693
Rock-paper-scissors-Spock-lizard
842
Sierpiński Triangle
660
Spelling Numbers
Ten-pin Bowling
840
Tongue-twisters
714
United States
895
890
Vampire Numbers
652
φ
733
√2
766