12 Days of Christmas
866
99 Bottles of Beer
671
Abundant Numbers
738
Christmas Trees
743
Collatz
898
Divisors
984
Emirp Numbers
589
Evil Numbers
853
Fibonacci
934
Fizz Buzz
960
Foo Fizz Buzz Bar
940
Happy Numbers
689
Leap Years
784
Niven Numbers
901
Odious Numbers
851
Pernicious Numbers
710
Prime Numbers
622
Quine
945
π
95
𝑒
70