12 Days of Christmas
41st
99 Bottles of Beer
40th
Abundant Numbers
48th
Christmas Trees
46th
Collatz
40th
Divisors
67th
Emirp Numbers
37th
Emojify
26th
Evil Numbers
49th
Evil Numbers (Long)
39th
Fibonacci
133rd
Fizz Buzz
214th
Foo Fizz Buzz Bar
55th
Happy Numbers
31st
Leap Years
93rd
Look and Say
23rd
Niven Numbers
49th
Niven Numbers (Long)
26th
Odious Numbers
43rd
Ordinal Numbers
30th
Pangram Grep
43rd
Pernicious Numbers
41st
Prime Numbers
61st
Recamán
23rd
Seven Segment
17th
Spelling Numbers
11th
Time Distance
8th
Tongue-twisters
46th
United States
25th