12 Days of Christmas
981st
24 Game
569th
99 Bottles of Beer
627th
Arrows
1,016th
Card Number Validation
701st
Collatz
1,884th
Day of Week
777th
Diamonds
1,501st
Divisors
4,661st
Farey Sequence
926th
Fizz Buzz
7,660th
Forsyth–Edwards Notation
677th
ISBN
1,269th
Kaprekar Numbers
719th
Leap Years
2,248th
Niven Numbers
2,805th
Pernicious Numbers
2,449th
Rock-paper-scissors-Spock-lizard
840th
Seven Segment
1,111th
Ten-pin Bowling
459th
Tongue-twisters
467th
π
2,479th
𝑒
2,111th