12 Days of Christmas
271st
99 Bottles of Beer
443rd
Abundant Numbers
267th
Christmas Trees
155th
Collatz
195th
Divisors
1st
Emirp Numbers
308th
Evil Numbers
303rd
Evil Numbers (Long)
205th
Fibonacci
181st
Fizz Buzz
534th
Foo Fizz Buzz Bar
255th
Happy Numbers
250th
Leap Years
308th
Niven Numbers
189th
Odious Numbers
149th
Pangram Grep
230th
Pascal’s Triangle
378th
Pernicious Numbers
230th
Prime Numbers
575th
Prime Numbers (Long)
306th
Quine
70th
π
463rd
√2
499th
𝑒
383rd