12 Days of Christmas
99 Bottles of Beer
Abundant Numbers
Christmas Trees
Cubes
689th
Diamonds
1,451st
Divisors
Emirp Numbers
Evil Numbers
Fibonacci
Fizz Buzz
1,719th4,611th705th
Foo Fizz Buzz Bar
971st
Happy Numbers
Leap Years
Niven Numbers
Number Spiral
1,293rd
Odious Numbers
Ordinal Numbers
Pascalβs Triangle
Pernicious Numbers
Prime Numbers
Quine
Rock-paper-scissors-Spock-lizard