12 Days of Christmas
92nd
Abundant Numbers
175th
75th
Abundant Numbers (Long)
96th
64th
Arabic to Roman
41st
Arithmetic Numbers
72nd
43rd
Billiards
8th
Christmas Trees
29th
Collatz
176th
62nd
Cubes
19th
Diamonds
30th
Divisors
238th
78th
Evil Numbers
88th
Evil Numbers (Long)
65th
Fibonacci
356th102nd131st78th45th1,087th
Fizz Buzz
562nd
248th
Fractions
35th
Happy Numbers
39th
Inventory Sequence
34th
Leap Years
23rd207th
61st
21st425th
Niven Numbers
133rd
63rd
Niven Numbers (Long)
71st
53rd
Number Spiral
21st
Odious Numbers
151st
70th
Odious Numbers (Long)
56th
Pascal’s Triangle
41st
Pernicious Numbers
61st
Prime Numbers
75th
Prime Numbers (Long)
72nd
Quine
74th
Roman to Arabic
25th
ROT13
26th
Seven Segment
34th
Sierpiński Triangle
32nd
Smith Numbers
32nd
26th
Tongue-twisters
71st
40th
Tower of Hanoi
27th
Trinomial Triangle
13th
8th