12 Days of Christmas
480th
99 Bottles of Beer
132nd73rd
Abundant Numbers
198th
Abundant Numbers (Long)
151st
Arithmetic Numbers
114th
Catalan Numbers
232nd
Christmas Trees
309th
Collatz
305th
Divisors
251st1st
Emirp Numbers
196th
Emirp Numbers (Long)
69th
Evil Numbers
381st
Evil Numbers (Long)
298th
Farey Sequence
43rd96th
Fizz Buzz
54th
Foo Fizz Buzz Bar
1st
Fractions
173rd
Happy Numbers
331st
Happy Numbers (Long)
192nd
ISBN
332nd
Kolakoski Sequence
238th
Leap Years
358th
Lucky Tickets
71st
Niven Numbers
133rd
Niven Numbers (Long)
107th
Number Spiral
182nd
Pangram Grep
53rd
Pascal’s Triangle
1st
Pernicious Numbers
251st
Pernicious Numbers (Long)
149th
Prime Numbers
147th
Prime Numbers (Long)
48th
Quine
67th
Reverse Polish Notation
91st
Rule 110
49th187th
Sierpiński Triangle
326th
Tongue-twisters
362nd
Vampire Numbers
211th
Van Eck Sequence
86th
π
384th6th