12 Days of Christmas
13th
99 Bottles of Beer
19th
Abundant Numbers
64th34th
Arabic to Roman
9th
brainfuck
13th
Christmas Trees
79th
CSS Colors
9th15th
Cubes
13th
Diamonds
19th
Divisors
32nd
Emirp Numbers
16th
Emojify
Evil Numbers
104th
Fibonacci
139th
Fizz Buzz
1st
Happy Numbers
17th
Leap Years
23rd20th53rd8th21st
Leyland Numbers
25th
Look and Say
45th
Lucky Tickets
35th
Morse Decoder
Morse Encoder
12th
Niven Numbers
69th34th
1st39th
Odious Numbers
100th
Ordinal Numbers
Pangram Grep
71st
Pascal’s Triangle
80th
Pernicious Numbers
64th
Poker
Prime Numbers
116th
Quine
46th
Rock-paper-scissors-Spock-lizard
Roman to Arabic
34th
Rule 110
41st
Seven Segment
17th
Sierpiński Triangle
38th17th
Spelling Numbers
20th
Ten-pin Bowling
Tongue-twisters
2nd
United States
λ
37th
π
70th
τ
57th
φ
49th
√2
55th
𝑒
64th