12 Days of Christmas
874
99 Bottles of Beer
769
Abundant Numbers
822
Arrows
374
Christmas Trees
740
Divisors
721841
Emirp Numbers
651
Evil Numbers
724914922
786
Fibonacci
771
Fizz Buzz
992
Foo Fizz Buzz Bar
870
Happy Numbers
625
Kolakoski Sequence
555
Leap Years
820
Leyland Numbers
670
Look and Say
603
Niven Numbers
789
Odious Numbers
720925920
769
Pangram Grep
948
Pascal’s Triangle
684
Pernicious Numbers
439
Prime Numbers
777
Prime Numbers (Long)
794
Quine
615
867
Recamán
697
Sierpiński Triangle
251
Tongue-twisters
845
λ
201
𝑒
440
48