12 Days of Christmas
81st
Abundant Numbers
155th
Catalan’s Constant
37th
Collatz
159th
Diamonds
57th
Divisors
216th
Emirp Numbers
70th
Evil Numbers
207th
Evil Numbers (Long)
97th
Fibonacci
324th
Fizz Buzz
366th
Happy Numbers
89th
Hexdump
32nd
Intersection
40th
Leap Years
197th
Lucky Numbers
30th
Morse Decoder
16th
Morse Encoder
19th
Number Spiral
44th
Odious Numbers
148th
Odious Numbers (Long)
80th
Pernicious Numbers (Long)
42nd
Prime Numbers
246th
Recamán
49th
Reverse Polish Notation
36th
Smith Numbers
33rd