12 Days of Christmas
176th
Abundant Numbers
55th
Arabic to Roman
106th
brainfuck
123rd
Christmas Trees
209th
Divisors
320th
Emirp Numbers
108th
Evil Numbers
164th
Fibonacci
67th
354th
Fizz Buzz
146th
602nd
219th
1st124th209th
1,459th
237th
Happy Numbers
113th
Leap Years
192nd
Niven Numbers
227th
Odious Numbers
143rd
Pangram Grep
138th
Prime Numbers
185th
Quine
1st25th203rd98th31st37th277th1st1st40th53rd
63rd85th85th13th
π
81st
√2
429th