12 Days of Christmas
278th
99 Bottles of Beer
442nd
Abundant Numbers
249th
Arabic to Roman
256th
Christmas Trees
400th
Collatz
639th
Divisors
465th
Emirp Numbers
371st
Evil Numbers
457th
Fibonacci
439th1,326th
Fizz Buzz
54th
Foo Fizz Buzz Bar
1st
Happy Numbers
450th
Leap Years
203rd
Niven Numbers
381st
Odious Numbers
272nd
Ordinal Numbers
148th
Pangram Grep
321st
Pascal’s Triangle
181st
Pernicious Numbers
251st
Prime Numbers
229th
Prime Numbers (Long)
217th
Quine
63rd
Recamán
268th
Roman to Arabic
186th
Seven Segment
271st
Spelling Numbers
57th
Time Distance
96th
π
461st
φ
163rd
√2
205th