12 Days of Christmas
4th
99 Bottles of Beer
8th
Abundant Numbers
9th
Abundant Numbers (Long)
6th
Arabic to Roman
1st
ASCII Table
5th
Catalan Numbers
10th
Christmas Trees
5th
Collatz
10th
12thCSS Colors
1st
Day of Week
1st
Diamonds
6th
Divisors
3rd
17thEmirp Numbers
13th
Emirp Numbers (Long)
6th
Evil Numbers
10th
Evil Numbers (Long)
1st
Fibonacci
74th
1st
29thFizz Buzz
9th
37thFractions
1st
Happy Numbers
11th
Inventory Sequence
5th
ISBN
6th
Jacobi Symbol
7th
Leap Years
1st
Levenshtein Distance
1st
Look and Say
5th
Niven Numbers
11th
26thNiven Numbers (Long)
1st
Odious Numbers
10th
Odious Numbers (Long)
1st
Ordinal Numbers
6th
Pangram Grep
5th
Pascal’s Triangle
3rd
Pernicious Numbers
1st
Pernicious Numbers (Long)
1st
Prime Numbers
1st
Prime Numbers (Long)
1st
Recamán
5th
Reverse Polish Notation
1st
Rijndael S-box
5th
Roman to Arabic
1st
Sierpiński Triangle
5th
Smith Numbers
6th
Tongue-twisters
9th
Van Eck Sequence
6th
√2
6th
𝑒
5th