12 Days of Christmas
223rd
99 Bottles of Beer
186th
Abundant Numbers
310th
Collatz
Cubes
65th
Diamonds
127th
Divisors
338th
Emirp Numbers
207th
Fibonacci
359th131st
Fizz Buzz
624th
Happy Numbers (Long)
Kolakoski Constant
53rd
Kolakoski Sequence
87th
Look and Say
92nd
Morse Encoder
77th15th
Niven Numbers (Long)
Pascal’s Triangle
148th
Prime Numbers
402nd
Repeating Decimals
Rock-paper-scissors-Spock-lizard
78th8th
Sierpiński Triangle
Tongue-twisters
165th21st
Van Eck Sequence
62nd16th