12 Days of Christmas
285th
99 Bottles of Beer
458th
Abundant Numbers
264th
Arabic to Roman
263rd
Christmas Trees
411th
Collatz
664th
Divisors
472nd
Emirp Numbers
380th
Evil Numbers
473rd
Fibonacci
447th1,365th
Fizz Buzz
54th
Foo Fizz Buzz Bar
1st
Happy Numbers
459th
Leap Years
209th
Niven Numbers
390th
Odious Numbers
284th
Ordinal Numbers
150th
Pangram Grep
326th
Pascal’s Triangle
181st
Pernicious Numbers
260th
Prime Numbers
240th
Prime Numbers (Long)
226th
Quine
67th
Recamán
271st
Roman to Arabic
189th
Seven Segment
278th
Spelling Numbers
59th
Time Distance
100th
π
473rd
φ
168th
√2
211th