Abundant Numbers
785
Abundant Numbers (Long)
931
Arithmetic Numbers
923
Collatz
939
CSS Colors
316
Divisors
984
Emirp Numbers
766
Evil Numbers
982
Evil Numbers (Long)
952
Factorial Factorisation
676
Fibonacci
987
Fizz Buzz
977
Happy Numbers
893
Kolakoski Sequence
866
Leap Years
922
ln 2
970
Look and Say
735
Lucky Numbers
860
Niven Numbers
962
Niven Numbers (Long)
889
Odious Numbers
980
Odious Numbers (Long)
950
Ordinal Numbers
897
Pangram Grep
922
Pascal’s Triangle
924
Pernicious Numbers
832
Prime Numbers
934
Quine
974
Recamán
864
Rock-paper-scissors-Spock-lizard
761
Roman to Arabic
704
ROT13
929
Sierpiński Triangle
822
Tic-tac-toe
715
π
766
τ
743
√2
981
𝑒
979