Abundant Numbers
26th
Collatz
31st444th
Divisors
193rd
Evil Numbers
78th
Evil Numbers (Long)
52nd
Fibonacci
247th
Fizz Buzz
281st
Foo Fizz Buzz Bar
45th
Fractions
59th
Happy Numbers
50th
Happy Numbers (Long)
37th
Intersection
30th
Leap Years
36th
Niven Numbers
112th
Odious Numbers
70th
Odious Numbers (Long)
48th
Pernicious Numbers
73rd
Pernicious Numbers (Long)
37th
Prime Numbers
75th
Quine
99th
Recamán
18th
Vampire Numbers
37th
Van Eck Sequence
13th
π
58th
√2
31st
𝑒
47th