12 Days of Christmas
53rd
Abundant Numbers
50th
Abundant Numbers (Long)
26th
Arithmetic Numbers
19th
Christmas Trees
51st
Collatz
119th
Diamonds
131st
Divisors
32nd1st
Evil Numbers
243rd
Evil Numbers (Long)
154th
Factorial Factorisation
27th
Fibonacci
160th109th
Fizz Buzz
31st
53rd
Fractions
47th
Intersection
53rd
Leap Years
152nd
Look and Say
107th
Niven Numbers
184th
Niven Numbers (Long)
77th
Odious Numbers
135th
Odious Numbers (Long)
91st
Pascalβs Triangle
68th
Pernicious Numbers
140th
Prime Numbers
141st
Prime Numbers (Long)
42nd
ROT13
63rd
Set
35th
Smith Numbers
28th
Star Wars GPT
34th
Tic-tac-toe
47th
Ξ»
129th