12 Days of Christmas
99 Bottles of Beer
Abundant Numbers
Diamonds
Divisors
Emirp Numbers
Evil Numbers
Fibonacci
Fizz Buzz
43rd
25th
19th
31st
377th
49th
67th
86th
49th
52nd
9th
4th
161st
724th
35th
13th
47th
97th
8th
358th
108th
171st
142nd
67th
320th
159th
62nd
Look and Say
Prime Numbers
Quine
1st
1st
24th
87th
Tongue-twisters
π
τ