12 Days of Christmas
81st
41st
24 Game
7th
99 Bottles of Beer
47th
13th
Abundant Numbers
35th
10th
24th
Abundant Numbers (Long)
18th
7th
21st
Arabic to Roman
41st
Arithmetic Numbers
11th
Arrows
17th
Ascending Primes
13th
7th
ASCII Table
12th
8th
6th
Billiards
2nd
brainfuck
16th
Card Number Validation
16th
8th
Catalan Numbers
7th
23rd
184th
Catalan’s Constant
20th
Christmas Trees
11th
12th
Collatz
19th31st
7th
23rd
Cubes
331st
Day of Week
21st
18th
Diamonds
43rd
19th
Divisors
34th15th
6th
21st
Emirp Numbers
13th
Emirp Numbers (Long)
11th
Evil Numbers
5th14th7th
26th
Evil Numbers (Long)
1st14th1st
24th
Factorial Factorisation
12th
8th
14th
Farey Sequence
27th
21st
74th
Fibonacci
46th44th56th28th39th50th3rd1st1st18th41st35th48th37th41st42nd68th32nd18th1st12th33rd121st138th26th112th6th1st
219th178th20th13th260th20th34th44th41st
Fizz Buzz
138th
52nd
57th
25th
8th
Foo Fizz Buzz Bar
59th
25th
26th
8th
Fractions
15th
Game of Life
28th
18th
Happy Numbers
26th
12th
Happy Numbers (Long)
13th
ISBN
32nd
Kaprekar Numbers
14th
10th
Kolakoski Constant
9th
7th
Kolakoski Sequence
35th
20th
Leap Years
42nd
16th
Leyland Numbers
15th
ln 2
5th
4th
28th
9th
9th
60th
4th
Look and Say
25th
17th
Lucky Numbers
19th
14th
Mandelbrot
4th
Niven Numbers
27th
17th
4th
Niven Numbers (Long)
34th
20th
2nd
Number Spiral
18th
5th
Odious Numbers
7th14th4th
21st
Odious Numbers (Long)
5th9th2nd
21st
Ordinal Numbers
16th
Partition Numbers
3rd
Pascal’s Triangle
12th
4th
15th
Pernicious Numbers
53rd
33rd
25th
Pernicious Numbers (Long)
13th
Prime Numbers
13th
9th
20th
49th
345th
Prime Numbers (Long)
19th
2nd
24th
Quine
133rd30th
22nd
31st
18th
10th
67th
9th
Recamán
52nd
27th
Reverse Polish Notation
1st
ROT13
25th
15th
Seven Segment
17th
7th
Sierpiński Triangle
31st
16th
Smith Numbers
11th
Star Wars Opening Crawl
140th
Transpose Sentence
1st
Vampire Numbers
5th
Van Eck Sequence
34th
22nd
γ
23rd
12th
λ
23rd
12th
15th
25th
π
11th
4th
10th
16th
7th
37th
τ
10th
4th
10th
10th
5th
27th
φ
10th
8th
31st
10th
118th
4th
√2
9th
6th
32nd
14th
18th
149th
4th
𝑒
54th13th
9th
30th
15th
11th
104th
4th