12 Days of Christmas
99 Bottles of Beer
Abundant Numbers
Christmas Trees
Cubes
723rd
Diamonds
1,415th
Divisors
Emirp Numbers
Evil Numbers
Fibonacci
Fizz Buzz
967th4,297th2,417th
Foo Fizz Buzz Bar
600th
Happy Numbers
Leap Years
Niven Numbers
Number Spiral
1,208th
Odious Numbers
Ordinal Numbers
Pascalβs Triangle
Pernicious Numbers
Prime Numbers
Quine
Rock-paper-scissors-Spock-lizard