12 Days of Christmas
5th
1st
99 Bottles of Beer
4th
Abundant Numbers
12th
Abundant Numbers (Long)
11th
Arabic to Roman
1st
Arithmetic Numbers
1st
Arrows
29th
ASCII Table
32nd
brainfuck
8th
4th
Card Number Validation
24th
Catalan Numbers
1st
Catalan’s Constant
17th
Christmas Trees
1st
Collatz
35th
CSS Colors
10th
Cubes
9th
Day of Week
1st
Diamonds
1st
Divisors
1st
Emirp Numbers
6th
Emirp Numbers (Long)
25th
Emojify
12th
Evil Numbers
9th
8th
1st
Evil Numbers (Long)
25th1st
Fibonacci
13th
1st
Fizz Buzz
1st1st
Foo Fizz Buzz Bar
58th
Forsyth–Edwards Notation
20th
Fractions
18th
Happy Numbers
18th
Happy Numbers (Long)
12th
Hexdump
49th
Intersection
7th
Inventory Sequence
46th
ISBN
8th
Kolakoski Constant
22nd
Kolakoski Sequence
14th
Leap Years
7th8th
Levenshtein Distance
9th
Leyland Numbers
6th
ln 2
15th
Look and Say
15th
Lucky Tickets
43rd
Morse Decoder
13th
Morse Encoder
9th
Musical Chords
21st
Niven Numbers
1st
Niven Numbers (Long)
22nd
Number Spiral
8th
Odious Numbers
6th
Odious Numbers (Long)
1st
Ordinal Numbers
1st
Pangram Grep
15th
Pascal’s Triangle
9th
Pernicious Numbers
1st
Pernicious Numbers (Long)
19th
Poker
42nd
Prime Numbers
1st
1st10th
Prime Numbers (Long)
1st
Proximity Grid
Quine
1st
Repeating Decimals
23rd
Reverse Polish Notation
20th
Rijndael S-box
19th
Rock-paper-scissors-Spock-lizard
59th
Roman to Arabic
18th
Rule 110
17th
Scrambled Sort
5th
Seven Segment
53rd
Sierpiński Triangle
26th
Smith Numbers
11th
Spelling Numbers
7th
Sudoku
15th
Sudoku (Fill-in)
15th
Ten-pin Bowling
34th
Time Distance
28th
Tongue-twisters
12th
Transpose Sentence
18th
Trinomial Triangle
11th
United States
6th
Vampire Numbers
Van Eck Sequence
6th
1st
Zodiac Signs
15th
λ
69th
π
21st
τ
17th
φ
1st
√2
1st
𝑒
1st