Abundant Numbers (Long)
44th
Ascending Primes
29th
Collatz
40th
Diamonds
45th
Emirp Numbers
38th
Factorial Factorisation
23rd
Fizz Buzz
147th
Foo Fizz Buzz Bar
43rd
Intersection
20th
ISBN
29th
Leyland Numbers
10th42nd
Mandelbrot
19th
Niven Numbers
85th
Partition Numbers
29th
Pernicious Numbers (Long)
38th
Reverse Polish Notation
15th
Time Distance
19th
Tower of Hanoi
27th
Trinomial Triangle
26th
√2
38th
𝑒
19th