12 Days of Christmas
168th
Abundant Numbers
59th
Arabic to Roman
107th
brainfuck
119th
Christmas Trees
214th
Divisors
331st
Emirp Numbers
106th
Evil Numbers
174th
Fibonacci
72nd
379th
Fizz Buzz
154th
645th
225th
1st129th214th
1,489th
247th
Happy Numbers
113th
Leap Years
207th
Niven Numbers
241st
Odious Numbers
151st
Pangram Grep
146th
Prime Numbers
194th
Quine
1st25th209th102nd33rd40th290th1st1st43rd57th
75th88th85th20th
π
88th
√2
457th