Abundant Numbers
842
Abundant Numbers (Long)
820
Arithmetic Numbers
780
Collatz
785
CSS Colors
271
Divisors
961
Emirp Numbers
882
Evil Numbers
980
Evil Numbers (Long)
949
Factorial Factorisation
533
Fibonacci
984
Fizz Buzz
954
Happy Numbers
976
Kolakoski Sequence
877
Leap Years
918
ln 2
946
Look and Say
775
Lucky Numbers
820
Niven Numbers
954
Niven Numbers (Long)
879
Odious Numbers
976
Odious Numbers (Long)
945
Ordinal Numbers
917
Pangram Grep
938
Pascal’s Triangle
900
Pernicious Numbers
828
Prime Numbers
934
Quine
976
Recamán
890
Rock-paper-scissors-Spock-lizard
756
Roman to Arabic
768
ROT13
807
Sierpiński Triangle
888
Tic-tac-toe
552
π
683
τ
662
√2
972
𝑒
970