12 Days of Christmas
275th
Abundant Numbers
390th
Arabic to Roman
120th
Catalan Numbers
162nd
Christmas Trees
138th
Diamonds
146th
Divisors
413th
Emirp Numbers
290th
Evil Numbers
188th1,047th
Fibonacci
178th
Fizz Buzz
204th
Foo Fizz Buzz Bar
126th
ISBN
142nd
Leap Years
501st
Niven Numbers
468th
Odious Numbers
142nd
Ordinal Numbers
239th
Pascal’s Triangle
218th
Prime Numbers
752nd
Prime Numbers (Long)
393rd
Quine
67th
Rock-paper-scissors-Spock-lizard
80th
Seven Segment
79th
Van Eck Sequence
137th