12 Days of Christmas
27th
Abundant Numbers
30th
34th
Arabic to Roman
Divisors
1st
4th
Emirp Numbers
151st
76th
Evil Numbers
350th
55th
Fibonacci
155th
7th
Fizz Buzz
35th
3rd
Happy Numbers
147th
28th
Leap Years
194th
43rd
Look and Say
33rd
9th
Niven Numbers
168th
27th
Odious Numbers
256th
45th
Pangram Grep
23rd
Pernicious Numbers
287th
52nd
Prime Numbers
137th
Quine
1st98th56th21st68th
RecamΓ‘n
204th
17th
Roman to Arabic
40th
Ο
28th