12 Days of Christmas
25th
12th
28th
99 Bottles of Beer
50th
Abundant Numbers
3rd
4th
Abundant Numbers (Long)
2nd
2nd
Arithmetic Numbers
4th
Christmas Trees
2nd
π
Collatz
7th
4th
Diamonds
8th
5th
Divisors
4th
1st
π
Emirp Numbers
51st
Emirp Numbers (Long)
27th
Evil Numbers
18th
10th
Evil Numbers (Long)
13th
7th
Fibonacci
7th
4th
π
44th
Fizz Buzz
65th
1st
1st
Foo Fizz Buzz Bar
π
2nd
Gijswijtβs Sequence
10th
5th
Inventory Sequence
2nd
3rd
3rd
9th
Kolakoski Sequence
11th
9th
Leap Years
42nd
20th
Look and Say
10th
8th
Lucky Numbers
21st
Niven Numbers
7th
15th
10th
Odious Numbers
18th
21st
Odious Numbers (Long)
16th
17th
Ordinal Numbers
20th
6th
Prime Numbers
9th
15th
3rd
Prime Numbers (Long)
5th
1st
RecamΓ‘n
3rd
1st
Van Eck Sequence
15th
5th