12 Days of Christmas
57th
Abundant Numbers
51st
Abundant Numbers (Long)
28th
Arithmetic Numbers
23rd
Christmas Trees
53rd
Collatz
135th
Diamonds
145th
Divisors
34th1st
Evil Numbers
263rd
Evil Numbers (Long)
173rd
Factorial Factorisation
29th
Fibonacci
179th117th
Fizz Buzz
31st
54th
Fractions
53rd
Intersection
60th
Leap Years
168th
Look and Say
118th
Niven Numbers
201st
Niven Numbers (Long)
89th
Odious Numbers
148th
Odious Numbers (Long)
104th
Pascal’s Triangle
74th
Pernicious Numbers
154th
Prime Numbers
148th
Prime Numbers (Long)
49th
ROT13
85th
Set
41st
Smith Numbers
29th
Star Wars GPT
38th
Tic-tac-toe
55th
λ
138th