12 Days of Christmas
99 Bottles of Beer
Abundant Numbers
Abundant Numbers (Long)
Arabic to Roman
Arithmetic Numbers
Arrows
Ascending Primes
ASCII Table
Catalan Numbers
Collatz
CSS Colors
Day of Week
Divisors
Emirp Numbers
Emirp Numbers (Long)
Emojify
Evil Numbers
Evil Numbers (Long)
Farey Sequence
Fibonacci
Fizz Buzz
Foo Fizz Buzz Bar
Fractions
Happy Numbers
Happy Numbers (Long)
Leap Years
Look and Say
Morse Decoder
Morse Encoder
Niven Numbers
Niven Numbers (Long)
Number Spiral
Odious Numbers
Odious Numbers (Long)
Pangram Grep
Pascal’s Triangle
Pernicious Numbers
Pernicious Numbers (Long)
Prime Numbers
Prime Numbers (Long)
Quine
Roman to Arabic
Smith Numbers
Tongue-twisters
United States
π
14th
24th
11th
19th
14th
100th
60th
39th
21st
12th
18th
17th
8th
26th
10th
17th
46th
29th
57th
6th
69th
175th
90th
𝑒
12th
23rd
13th
19th
19th
66th
33rd
40th
8th
13th
22nd
19th
26th
25th
12th
17th
35th
24th
54th
18th
51st
128th
68th