12 Days of Christmas
849
99 Bottles of Beer
762
Abundant Numbers
813
Arrows
367
Christmas Trees
733
Divisors
713833
Emirp Numbers
647
Evil Numbers
722912919
784
Fibonacci
768
Fizz Buzz
986
Foo Fizz Buzz Bar
862
Happy Numbers
619
Kolakoski Sequence
552
Leap Years
797
Leyland Numbers
661
Look and Say
596
Niven Numbers
779
Odious Numbers
702920915
766
Pangram Grep
937
Pascal’s Triangle
680
Pernicious Numbers
434
Prime Numbers
776
Prime Numbers (Long)
789
Quine
607
864
Recamán
685
Sierpiński Triangle
245
Tongue-twisters
842
λ
185
𝑒
431
47