12 Days of Christmas
18th
25th
106th
99 Bottles of Beer
24th
284th
21st
367th
Abundant Numbers
29th
36th
567th
Arabic to Roman
19th
281st
brainfuck
270th
Christmas Trees
35th
372nd
Cubes
252nd
Diamonds
25th
398th
Divisors
22nd
71st
522nd
Emirp Numbers
28th
431st
Evil Numbers
35th
668th
Fibonacci
90th
36th
389th
81st
166th
53rd
417th
71st
50th
168th
75th
79th
89th
712th
50th
219th
174th
61st
Fizz Buzz
85th
494th
413th
1,029th
172nd
155th
470th
129th
Happy Numbers
23rd
47th
373rd
Leap Years
23rd
66th
613th
Leyland Numbers
16th
279th
Morse Decoder
165th
Morse Encoder
183rd
Niven Numbers
27th
43rd
590th
Odious Numbers
30th
56th
407th
Ordinal Numbers
20th
215th
Pangram Grep
399th
Pascal’s Triangle
17th
354th
Pernicious Numbers
26th
487th
Poker
79th
Prime Numbers
33rd
113th
542nd
Quine
82nd
203rd
119th
97th
91st
52nd
84th
112th
Rock-paper-scissors-Spock-lizard
209th
Roman to Arabic
244th
Rule 110
197th
Seven Segment
260th
Sierpiński Triangle
19th
258th
Spelling Numbers
124th
Sudoku
6th
84th
Ten-pin Bowling
5th
85th
United States
94th
13th
182nd
λ
21st
π
28th
269th
τ
20th
φ
26th
√2
25th
𝑒
21st