12 Days of Christmas
116th
99 Bottles of Beer
236th
Arabic to Roman
129th
Christmas Trees
255th
Cubes
62nd
Diamonds
189th
Divisors
320th
Emirp Numbers
262nd
Evil Numbers
595th
Fibonacci
844th
Fizz Buzz
507th
1,804th
278th
Happy Numbers
286th
Leap Years
250th
Morse Decoder
124th
Morse Encoder
133rd
Niven Numbers
383rd
Odious Numbers
399th
Ordinal Numbers
309th
Pangram Grep
324th
Pascal’s Triangle
215th
Pernicious Numbers
249th
Prime Numbers
556th
Quine
181st
Rock-paper-scissors-Spock-lizard
57th
Roman to Arabic
160th
Rule 110
81st
Seven Segment
127th
Spelling Numbers
86th
Sudoku
62nd
Ten-pin Bowling
89th
λ
52nd
75th
27th
29th
39th
106th
30th
26th
π
281st
τ
187th
φ
41st
267th
53rd
√2
50th
392nd
47th
𝑒
58th
46th
295th
52nd
58th