Abundant Numbers (Long)
47th
Ascending Primes
33rd
Collatz
41st
Diamonds
51st
Emirp Numbers
41st
Factorial Factorisation
26th
Fizz Buzz
149th
Foo Fizz Buzz Bar
47th
Intersection
23rd
ISBN
30th
Leyland Numbers
11th44th
Mandelbrot
21st
Niven Numbers
90th
Partition Numbers
34th
Pernicious Numbers (Long)
42nd
Reverse Polish Notation
17th
Time Distance
22nd
Tower of Hanoi
28th
Trinomial Triangle
29th
√2
44th
𝑒
21st