12 Days of Christmas
206th
99 Bottles of Beer
170th
Abundant Numbers
309th
Collatz
Cubes
61st
Diamonds
125th
Divisors
338th
Emirp Numbers
204th
Fibonacci
360th131st
Fizz Buzz
624th
Happy Numbers (Long)
Kolakoski Constant
53rd
Kolakoski Sequence
86th
Look and Say
90th
Morse Encoder
74th14th
Niven Numbers (Long)
Pascal’s Triangle
147th
Prime Numbers
401st
Repeating Decimals
Rock-paper-scissors-Spock-lizard
76th8th
Sierpiński Triangle
Tongue-twisters
165th21st
Van Eck Sequence
62nd16th