12 Days of Christmas
28th181st155th42nd72nd52nd131st375th36th62nd29th50th
138th1,077th35th115th91st24th45th19th
99 Bottles of Beer
22nd
398th
1,001st
Fibonacci
140th550th
173rd
309th559th
207th
206th
1,437th175th255th262nd
Fizz Buzz
184th
977th
2,642nd
304th
Happy Numbers
231st
Leap Years
64th
477th
900th
Recamán
416th