12 Days of Christmas
116th
99 Bottles of Beer
239th
Arabic to Roman
130th
Christmas Trees
260th
Cubes
63rd
Diamonds
188th
Divisors
323rd
Emirp Numbers
265th
Evil Numbers
598th
Fibonacci
855th
Fizz Buzz
512th
1,823rd
278th
Happy Numbers
288th
Leap Years
254th
Morse Decoder
124th
Morse Encoder
133rd
Niven Numbers
385th
Odious Numbers
402nd
Ordinal Numbers
311th
Pangram Grep
330th
Pascal’s Triangle
216th
Pernicious Numbers
252nd
Prime Numbers
565th
Quine
183rd
Rock-paper-scissors-Spock-lizard
58th
Roman to Arabic
161st
Rule 110
81st
Seven Segment
128th
Spelling Numbers
87th
Sudoku
62nd
Ten-pin Bowling
90th
λ
54th
76th
28th
30th
40th
108th
31st
26th
π
286th
τ
191st
φ
41st
270th
53rd
√2
50th
393rd
47th
𝑒
59th
46th
298th
52nd
58th