12 Days of Christmas
17thAbundant Numbers
11thASCII Table
3rdCatalan Numbers
1stChristmas Trees
7thCollatz
7thCSS Colors
18thDivisors
1st
4thEmirp Numbers
16thEvil Numbers
8thEvil Numbers (Long)
1stFibonacci
1st
1st
1stFizz Buzz
1st
3rdFoo Fizz Buzz Bar
1st
Forsyth–Edwards Notation
3rdFractions
1stHappy Numbers
12thHappy Numbers (Long)
2ndKolakoski Constant
4thKolakoski Sequence
1st
1stLevenshtein Distance
12thLeyland Numbers
2ndLucky Numbers
1stMedal Tally
2ndNiven Numbers
8thNiven Numbers (Long)
1stOdious Numbers
8thOdious Numbers (Long)
1stPangram Grep
1stPascal’s Triangle
3rdPrime Numbers
4th
1st
9thPrime Numbers (Long)
2nd
1stQuine
1stReverse Polish Notation
6thTime Distance
9thVan Eck Sequence
1stπ
4thτ
4thφ
1st√2
1st𝑒
1st