12 Days of Christmas
841
99 Bottles of Beer
762
Abundant Numbers
813
Arrows
367
Christmas Trees
733
Divisors
713833
Emirp Numbers
647
Evil Numbers
722912920
784
Fibonacci
768
Fizz Buzz
986
Foo Fizz Buzz Bar
862
Happy Numbers
619
Kolakoski Sequence
553
Leap Years
797
Leyland Numbers
642
Look and Say
596
Niven Numbers
779
Odious Numbers
702921915
766
Pangram Grep
938
Pascal’s Triangle
680
Pernicious Numbers
435
Prime Numbers
776
Prime Numbers (Long)
790
Quine
607
864
Recamán
686
Sierpiński Triangle
246
Tongue-twisters
833
λ
184
𝑒
432
47