12 Days of Christmas
61st
Abundant Numbers
43rd
Abundant Numbers (Long)
34th
Catalan’s Constant
13th
Collatz
66th199th
Divisors
52nd
Evil Numbers
89th
Evil Numbers (Long)
69th
Fibonacci
12th1st
Fizz Buzz
318th
Happy Numbers
47th200th
Happy Numbers (Long)
26th
Niven Numbers
63rd
Odious Numbers
88th
Odious Numbers (Long)
70th
Ordinal Numbers
43rd
Pangram Grep
29th
Pascal’s Triangle
25th557th
Prime Numbers
111th
Prime Numbers (Long)
73rd
Quine
23rd72nd
Recamán
19th223rd
Repeating Decimals
128th