12 Days of Christmas
108th
99 Bottles of Beer
23rd
Abundant Numbers
51st
Abundant Numbers (Long)
31st
Arabic to Roman
43rd
Arithmetic Numbers
11th
Arrows
16th
Ascending Primes
22nd
ASCII Table
36th
Card Number Validation
7th
Collatz
24th
CSS Colors
22nd
Day of Week
💎
Divisors
105th12th
Emirp Numbers
23rd
Evil Numbers
8th
Evil Numbers (Long)
6th
Factorial Factorisation
10th
Farey Sequence
9th
Fibonacci
110th1st
Fizz Buzz
166th1st
Foo Fizz Buzz Bar
53rd
Forsyth–Edwards Notation
20th
Happy Numbers
14th
Leap Years
83rd
Leyland Numbers
7th
ln 2
💎
Look and Say
4th
Niven Numbers
1st
Niven Numbers (Long)
18th
Odious Numbers
8th
Odious Numbers (Long)
6th
Ordinal Numbers
34th
Pascal’s Triangle
32nd
Pernicious Numbers
53rd
Prime Numbers
87th
Prime Numbers (Long)
52nd
Recamán
17th
Set
8th
Spelling Numbers
18th
United States
31st
π
26th
τ
22nd