12 Days of Christmas
42nd
Collatz
68th
Divisors
142nd
Evil Numbers
283rd
Fibonacci
359th
Fizz Buzz
1st
Foo Fizz Buzz Bar
55th
Happy Numbers
76th
Happy Numbers (Long)
41st
Kolakoski Sequence
85th
Leap Years
74th
Leyland Numbers
41st
Look and Say
28th
Niven Numbers
131st
Pascal’s Triangle
75th
Pernicious Numbers
128th
Prime Numbers
60th
Quine
32nd
Recamán
68th
Tongue-twisters
103rd