Abundant Numbers
171st
72nd
Abundant Numbers (Long)
95th
64th
Arabic to Roman
40th
Arithmetic Numbers
69th
44th
Billiards
6th
Christmas Trees
29th
Collatz
168th
60th
Cubes
19th
Diamonds
28th
Divisors
237th
79th
Evil Numbers
84th
Evil Numbers (Long)
63rd
Fibonacci
340th99th127th44th1,079th
Fizz Buzz
549th
242nd
Fractions
34th
Happy Numbers
39th
Inventory Sequence
34th
Leap Years
21st203rd
59th20th426th
Niven Numbers
130th
63rd
Niven Numbers (Long)
67th
52nd
Number Spiral
21st
Odious Numbers
149th
68th
Odious Numbers (Long)
55th
Pascal’s Triangle
41st
Pernicious Numbers
60th
Prime Numbers
76th
Prime Numbers (Long)
73rd
Quine
72nd
Roman to Arabic
25th
ROT13
24th
Seven Segment
34th
Sierpiński Triangle
32nd
Smith Numbers
32nd
26th
Tongue-twisters
70th
39th
Trinomial Triangle
12th
8th