12 Days of Christmas
101st
Abundant Numbers
316th
brainfuck
271st
Christmas Trees
18th
142nd
Cubes
162nd
Diamonds
111th
Divisors
52nd53rd37th118th48th60th
Emirp Numbers
152nd
Evil Numbers
81st
606th
Fibonacci
51st
187th112th46th
Fizz Buzz
897th
146th
Happy Numbers
116th
Leap Years
293rd
Niven Numbers
276th
Odious Numbers
77th
513th
Ordinal Numbers
58th
244th
Pangram Grep
51st
Pascal’s Triangle
40th47th
341st
Pernicious Numbers
329th
Prime Numbers
92nd
326th
Quine
72nd
Roman to Arabic
100th
Rule 110
128th
Seven Segment
139th
Sierpiński Triangle
140th
Sudoku
13th
√2
252nd
𝑒
171st