12 Days of Christmas
9th99 Bottles of Beer
14th
10thArabic to Roman
7th
7thChristmas Trees
16th
26th
10thDivisors
29th
36th
11thEmirp Numbers
9th
19th
12thEvil Numbers
39th
27th
19thFibonacci
665th
31st
38th
63rdFizz Buzz
8th
472nd
33rdHappy Numbers
27th
15th
18thMorse Decoder
12th
Morse Encoder
8th
10thNiven Numbers
33rdOdious Numbers
34th
28th
22ndPangram Grep
14th
18thPascal’s Triangle
31stPernicious Numbers
26thPrime Numbers
108th
71st
20th
29th
494th
15thQuine
1st
68th
4th
31stRoman to Arabic
101st
22nd
Seven Segment
13th
10thSierpiński Triangle
15th
28thSpelling Numbers
12th
π
39th
13th
382nd
28thτ
31st
9th
18thφ
30th
13th
24th𝑒
26th
13th
29th