12 Days of Christmas
182nd
99 Bottles of Beer
320th
Abundant Numbers
170th
Christmas Trees
345th
Collatz
124th
Divisors
424th
Emirp Numbers
366th
Evil Numbers
493rd
Fibonacci
806th132nd
Fizz Buzz
1,449th
Happy Numbers
273rd
Morse Decoder
127th
Niven Numbers
211th
Odious Numbers
302nd
Pangram Grep
Pascal’s Triangle
412th
Pernicious Numbers
230th
Prime Numbers
474th
Quine
1st72nd
Recamán
58th
Roman to Arabic
173rd
Seven Segment
120th
Sierpiński Triangle
124th
Spelling Numbers
95th
United States