12 Days of Christmas
15th
Abundant Numbers
47th
34th
Arabic to Roman
12th
Divisors
1st
1st
Emirp Numbers
251st
73rd
Evil Numbers
350th
55th
Fibonacci
155th
7th
Fizz Buzz
52nd
1st
Happy Numbers
155th
24th
Leap Years
191st
43rd
Look and Say
80th
8th
Niven Numbers
168th
27th
Odious Numbers
255th
45th
Pangram Grep
23rd
Pernicious Numbers
283rd
52nd
Prime Numbers
137th
Quine
1st98th56th21st68th
RecamΓ‘n
187th
17th
Roman to Arabic
36th
Ο
25th