12 Days of Christmas
149th
Collatz
78th
Divisors
143rd
Evil Numbers
292nd
Fibonacci
372nd
Fizz Buzz
1st
Foo Fizz Buzz Bar
56th
Happy Numbers
71st
Happy Numbers (Long)
46th
Kolakoski Sequence
89th
Leap Years
87th
Leyland Numbers
37th
Look and Say
29th
Niven Numbers
135th
Pascal’s Triangle
78th
Pernicious Numbers
135th
Prime Numbers
66th
Quine
34th
Recamán
71st
Tongue-twisters
90th