12 Days of Christmas
6th
99 Bottles of Beer
11th
Abundant Numbers
7th
Abundant Numbers (Long)
124th7th
Arabic to Roman
29th
Christmas Trees
6th
Collatz
7th
Day of Week
1st
Divisors
1st
Evil Numbers
1st9th
Evil Numbers (Long)
41st7th
Fibonacci
189th7th
Fizz Buzz
214th5th
Foo Fizz Buzz Bar
134th9th
Forsyth–Edwards Notation
4th
Happy Numbers (Long)
7th
Inventory Sequence
5th
Jacobi Symbol
4th
Leap Years
8th
Levenshtein Distance
9th
Leyland Numbers
5th
Look and Say
5th
Lucky Numbers
4th
Niven Numbers
12th
Niven Numbers (Long)
8th
Number Spiral
3rd
Odious Numbers
1st9th
Odious Numbers (Long)
1st8th
Pascal’s Triangle
1st
Pernicious Numbers
1st7th
Prime Numbers
1st
Prime Numbers (Long)
56th1st
Quine
75th
Recamán
5th
Roman to Arabic
23rd
SI Units
2nd
United States
1st
Van Eck Sequence
4th