12 Days of Christmas
56th
Abundant Numbers
51st
Abundant Numbers (Long)
28th
Arithmetic Numbers
23rd
Christmas Trees
53rd
Collatz
129th
Diamonds
141st
Divisors
32nd1st
Evil Numbers
258th
Evil Numbers (Long)
167th
Factorial Factorisation
28th
Fibonacci
167th113th
Fizz Buzz
31st
54th
Fractions
53rd
Intersection
56th
Leap Years
161st
Look and Say
112th
Niven Numbers
195th
Niven Numbers (Long)
84th
Odious Numbers
143rd
Odious Numbers (Long)
99th
Pascal’s Triangle
75th
Pernicious Numbers
148th
Prime Numbers
145th
Prime Numbers (Long)
48th
ROT13
78th
Set
38th
Smith Numbers
28th
Star Wars GPT
36th
Tic-tac-toe
52nd
λ
137th