12 Days of Christmas
682
Abundant Numbers
700
Arithmetic Numbers
580
790
Arrows
702
Ascending Primes
864
Christmas Trees
904
Collatz
796
CSS Colors
544
DFA Simulator
718
Diamonds
881
Divisors
632
911
Evil Numbers
421
980
Factorial Factorisation
447
Fibonacci
905649758932
Fizz Buzz
892
809890
Foo Fizz Buzz Bar
899
Fractions
882
Intersection
585
Leap Years
686
643862
Levenshtein Distance
761
Leyland Numbers
847
Look and Say
916
Medal Tally
817
Morse Decoder
606
Musical Chords
844
410
Niven Numbers
819
Niven Numbers (Long)
770
895
Odious Numbers
429
976
Ordinal Numbers
578
729
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
663
Spelling Numbers
Ten-pin Bowling
877
Tongue-twisters
716
United States
895
890
Vampire Numbers
657
φ
733
√2
766