12 Days of Christmas
5th
24 Game
5th
99 Bottles of Beer
40th
Abundant Numbers
30th
Abundant Numbers (Long)
23rd
Arabic to Roman
6th
Arithmetic Numbers
5th
Arrows
6th
Ascending Primes
3rd
ASCII Table
7th
Billiards
5th
Card Number Validation
3rd
Catalan Numbers
💎
Catalan’s Constant
8th
Christmas Trees
6th
Collatz
8th
CSS Colors
9th
Cubes
4th
Day of Week
6th
DFA Simulator
2nd
Diamonds
41st
77th8th
Divisors
1st
Emirp Numbers
13th
Emirp Numbers (Long)
4th
Emojify
7th
Evil Numbers
18th11th
Evil Numbers (Long)
16th
Factorial Factorisation
13th
4th
Farey Sequence
6th
Fibonacci
129th
1st
Fizz Buzz
201st
7th
Foo Fizz Buzz Bar
8th
Forsyth–Edwards Notation
2nd
Fractions
8th
Gijswijt’s Sequence
4th
Happy Numbers
65th
16th
Happy Numbers (Long)
4th
Hexdump
2nd
Inventory Sequence
12th
ISBN
9th
Kaprekar Numbers
4th
Kolakoski Sequence
14th
Leap Years
17th
Leyland Numbers
3rd
Look and Say
8th
Lucky Numbers
61st
5th
Medal Tally
5th
Niven Numbers
1st
Niven Numbers (Long)
14th
Odious Numbers
18th
Odious Numbers (Long)
20th
Ordinal Numbers
4th
PalindromemordnilaP
2nd
Pangram Grep
1st
Pascal’s Triangle
94th
1st
Pernicious Numbers
1st
Pernicious Numbers (Long)
1st
Prime Numbers
29th40th26th21st180th114th99th19th21st28th48th25th26th24th31st14th30th25th12th30th13th77th46th115th99th22nd127th405th14th57th47th19th91st39th18th25th66th118th88th29th1,071st24th93rd13th7th
1st
11th
Prime Numbers (Long)
1st
Recamán
13th
Repeating Decimals
4th
Reverse Polish Notation
16th
Rijndael S-box
50th
Rock-paper-scissors-Spock-lizard
3rd
Roman to Arabic
8th
ROT13
3rd
Rule 110
10th
Seven Segment
6th
SI Units
💎
Sierpiński Triangle
9th
Smith Numbers
4th
Spelling Numbers
7th
Star Wars Opening Crawl
4th
Tic-tac-toe
3rd
Time Distance
3rd
Tongue-twisters
5th
Transpose Sentence
3rd
United States
9th
Vampire Numbers
8th
Van Eck Sequence
6th
Zeckendorf Representation
3rd
λ
39th
29th31st
𝑒
9th