12 Days of Christmas
1,108th
99 Bottles of Beer
20th
Abundant Numbers
22nd
Arrows
30th
Collatz
27th
Evil Numbers (Long)
595th
Fibonacci
170th
87th
Fizz Buzz
127th188th
75th575th1,449th84th
Niven Numbers (Long)
475th
Odious Numbers
108th
868th70th135th
Pangram Grep
23rd
40th70th
66th247th40th32nd624th64th111th42nd35th
Prime Numbers
52nd
Quine
146th
887th
π
39th