12 Days of Christmas
1,031st
99 Bottles of Beer
19th
Abundant Numbers
19th
Arrows
18th
Collatz
25th
Evil Numbers (Long)
551st
Fibonacci
161st
80th
Fizz Buzz
124th181st
74th565th1,410th83rd
Niven Numbers (Long)
446th
Odious Numbers
102nd
834th67th131st
Pangram Grep
20th
37th66th
59th232nd37th31st596th61st107th39th33rd
Prime Numbers
49th
Quine
137th
840th
π
36th