12 Days of Christmas
524th
99 Bottles of Beer
134th161st
Abundant Numbers
257th
Abundant Numbers (Long)
189th
Arithmetic Numbers
141st
Catalan Numbers
249th
Christmas Trees
345th
Collatz
344th
Divisors
262nd118th
Emirp Numbers
247th
Emirp Numbers (Long)
104th
Evil Numbers
404th
Evil Numbers (Long)
315th
Farey Sequence
46th115th
Fizz Buzz
210th
Foo Fizz Buzz Bar
133rd
Fractions
209th
Happy Numbers
353rd
Happy Numbers (Long)
217th
ISBN
342nd
Kolakoski Sequence
248th
Leap Years
377th
Lucky Tickets
99th
Niven Numbers
147th
Niven Numbers (Long)
130th
Number Spiral
194th
Pangram Grep
117th
Pascal’s Triangle
44th
Pernicious Numbers
269th
Pernicious Numbers (Long)
164th
Prime Numbers
158th
Prime Numbers (Long)
52nd
Quine
72nd
Reverse Polish Notation
122nd
Rule 110
51st213th
Sierpiński Triangle
331st
Tongue-twisters
385th
Vampire Numbers
234th
Van Eck Sequence
110th
π
402nd6th