Abundant Numbers (Long)
44th
Ascending Primes
29th
Collatz
40th
Diamonds
45th
Emirp Numbers
45th
Factorial Factorisation
24th
Fizz Buzz
146th
Foo Fizz Buzz Bar
43rd
Intersection
25th
ISBN
29th
Leyland Numbers
8th41st
Mandelbrot
19th
Niven Numbers
85th
Partition Numbers
29th
Pernicious Numbers (Long)
36th
Reverse Polish Notation
18th
Time Distance
21st
Tower of Hanoi
26th
Trinomial Triangle
25th
√2
36th
𝑒
19th