12 Days of Christmas
50th
Abundant Numbers
40th
Abundant Numbers (Long)
26th
Catalan’s Constant
11th
Collatz
48th
139th
Divisors
41st
Evil Numbers
72nd
Evil Numbers (Long)
47th
Fibonacci
4th
1st
57th
Fizz Buzz
261st
Happy Numbers
39th
158th
Happy Numbers (Long)
21st
Niven Numbers
49th
Odious Numbers
68th
Odious Numbers (Long)
49th
Ordinal Numbers
39th
Pangram Grep
29th
Pascal’s Triangle
21st
446th
Prime Numbers
97th
Prime Numbers (Long)
58th
Quine
21st
52nd
Recamán
15th
175th