12 Days of Christmas
97th
Abundant Numbers
182nd
80th
Abundant Numbers (Long)
102nd
67th
Arabic to Roman
43rd
Arithmetic Numbers
76th
48th
Billiards
8th
Christmas Trees
30th
Collatz
184th
68th
Continued Fractions
15th
9th
Cubes
20th
Diamonds
32nd
Divisors
247th
84th
Evil Numbers
89th
Evil Numbers (Long)
108th
66th
Fibonacci
362nd106th135th82nd49th1,056th
Fizz Buzz
570th
253rd
Fractions
35th
Happy Numbers
41st
Inventory Sequence
34th
Leap Years
26th220th
67th
25th447th
Niven Numbers
135th
66th
Niven Numbers (Long)
73rd
74th
Number Spiral
23rd
Odious Numbers
156th
71st
Odious Numbers (Long)
57th
Ordinal Numbers
33rd
468th
Pangram Grep
40th
Pascal’s Triangle
42nd
Pernicious Numbers
65th
Prime Numbers
225th
79th
Prime Numbers (Long)
76th
Quine
75th
Roman to Arabic
25th
ROT13
27th
Seven Segment
34th
Sierpiński Triangle
33rd
Smith Numbers
33rd
27th
Tongue-twisters
72nd
40th
Tower of Hanoi
46th
33rd
Trinomial Triangle
17th
10th