12 Days of Christmas
55th
Abundant Numbers
51st
Abundant Numbers (Long)
28th
Arithmetic Numbers
23rd
Christmas Trees
53rd
Collatz
125th
Diamonds
139th
Divisors
32nd1st
Evil Numbers
256th
Evil Numbers (Long)
165th
Factorial Factorisation
28th
Fibonacci
165th110th
Fizz Buzz
31st
54th
Fractions
51st
Intersection
56th
Leap Years
160th
Look and Say
112th
Niven Numbers
192nd
Niven Numbers (Long)
82nd
Odious Numbers
141st
Odious Numbers (Long)
97th
Pascal’s Triangle
75th
Pernicious Numbers
146th
Prime Numbers
145th
Prime Numbers (Long)
48th
ROT13
78th
Set
37th
Smith Numbers
28th
Star Wars GPT
36th
Tic-tac-toe
51st
λ
136th