Abundant Numbers
780
Abundant Numbers (Long)
925
Arithmetic Numbers
905
Collatz
867
CSS Colors
315
Divisors
962
Emirp Numbers
752
Evil Numbers
980
Evil Numbers (Long)
949
Factorial Factorisation
664
Fibonacci
984
Fizz Buzz
973
Happy Numbers
888
Kolakoski Sequence
864
Leap Years
919
ln 2
964
Look and Say
730
Lucky Numbers
852
Niven Numbers
954
Niven Numbers (Long)
879
Odious Numbers
977
Odious Numbers (Long)
945
Ordinal Numbers
883
Pangram Grep
917
Pascal’s Triangle
921
Pernicious Numbers
828
Prime Numbers
934
Quine
976
Recamán
857
Rock-paper-scissors-Spock-lizard
754
Roman to Arabic
701
ROT13
930
Sierpiński Triangle
813
Tic-tac-toe
708
π
764
τ
740
√2
972
𝑒
970