12 Days of Christmas
333rd
99 Bottles of Beer
522nd
Abundant Numbers
304th
Arabic to Roman
300th
Christmas Trees
465th
Collatz
766th
Divisors
523rd
Emirp Numbers
416th
Evil Numbers
533rd
Fibonacci
504th1,486th
Fizz Buzz
85th
Foo Fizz Buzz Bar
1st
Happy Numbers
504th
Leap Years
240th
Niven Numbers
437th
Odious Numbers
335th
Ordinal Numbers
176th
Pangram Grep
364th
Pascal’s Triangle
203rd
Pernicious Numbers
302nd
Prime Numbers
284th
Prime Numbers (Long)
264th
Quine
95th
Recamán
312th
Roman to Arabic
214th
Seven Segment
309th
Spelling Numbers
72nd
Time Distance
122nd
π
500th
φ
193rd
√2
255th