12 Days of Christmas
182nd
99 Bottles of Beer
3rd
Collatz
74th
Evil Numbers
157th
Evil Numbers (Long)
71st
Fibonacci
20th128th
ISBN
87th
Leap Years
62nd
Niven Numbers
190th
Niven Numbers (Long)
65th
Number Spiral
29th
Odious Numbers
141st
Odious Numbers (Long)
70th
Ordinal Numbers
162nd
Rock-paper-scissors-Spock-lizard
72nd
Seven Segment
92nd
SierpiΕski Triangle
114th
Tongue-twisters
82nd
π
13th