12 Days of Christmas
39th
840th
99 Bottles of Beer
19th
816th
Abundant Numbers
21st
626th
Abundant Numbers (Long)
16th
367th
Alphabetic Numbers
20th
73rd
Arabic to Roman
1st
329th
Arithmetic Numbers
11th
278th
Arrows
12th
320th
Ascending Primes
11th
221st
ASCII Table
14th
286th
Calendar
5th
171st
Card Number Validation
11th
182nd
Catalan Numbers
22nd
222nd
Catalan’s Constant
11th
147th
Christmas Trees
13th
716th
Collatz
20th
623rd
Continued Fractions
5th
113th
Cubes
8th
356th
Day of Week
8th
336th
Diamonds
13th34th
459th
79th
Divisors
33rd
544th
Emirp Numbers
32nd
609th
Emirp Numbers (Long)
11th
286th
Emojify
12th
314th
Evil Numbers
1st
781st
72nd
Evil Numbers (Long)
1st
445th
Factorial Factorisation
8th
155th
Farey Sequence
15th
206th
Fibonacci
61st
1,192nd
Fizz Buzz
106th
40th
382nd1,503rd
142nd
954th
121st
367th
Foo Fizz Buzz Bar
18th
583rd
Fractions
18th
408th
Game of Life
8th
180th
Gijswijt’s Sequence
9th
149th
Gray Code Decoder
10th
109th
Gray Code Encoder
13th
114th
Happy Numbers
29th
106th
393rd
Happy Numbers (Long)
16th
246th
Hilbert Curve
7th
78th
Intersection
9th
233rd
Inventory Sequence
13th
249th
ISBN
20th
21st314th
Jacobi Symbol
9th
131st
Kaprekar Numbers
13th
108th
Kolakoski Constant
11th
124th
Kolakoski Sequence
13th
244th
Leap Years
9th
819th
Levenshtein Distance
21st
11th
179th
10th22nd
Leyland Numbers
13th
344th
ln 2
14th
213th
Look and Say
13th
248th
Lucky Numbers
13th
56th
263rd
Lucky Tickets
10th
163rd
Mandelbrot
5th
116th
Maze
6th
143rd
Minesweeper
5th
109th
Morse Decoder
10th
198th
Morse Encoder
9th
223rd
Musical Chords
7th
122nd
N Queens
7th
115th
Nim
5th
31st
86th
Niven Numbers
35th
515th
Niven Numbers (Long)
15th
293rd
Number Spiral
24th
191st
Odious Numbers
1st
549th
Odious Numbers (Long)
1st
337th
Ordinal Numbers
20th
371st
PalindromemordnilaP
9th
195th
Pangram Grep
13th
352nd
Partition Numbers
10th
92nd
Pascal’s Triangle
18th
79th
294th
Pernicious Numbers
5th
451st
Pernicious Numbers (Long)
17th
215th
Prime Numbers
9th
689th
Prime Numbers (Long)
9th
489th
Proximity Grid
4th
134th
Quine
110th
94th
Recamán
15th
407th
Repeating Decimals
5th
136th
Reverse Polish Notation
9th
244th
Rijndael S-box
7th
113th
Rock-paper-scissors-Spock-lizard
12th
27th
302nd
Roman to Arabic
24th
183rd
ROT13
7th
34th121st
Rule 110
11th
202nd
Scrambled Sort
8th
141st
Semiprime Numbers
4th
49th
Set
5th
125th
Seven Segment
10th
398th
Sierpiński Triangle
12th
153rd
Smith Numbers
9th
197th
Spelling Numbers
112th
170th
Sphenic Numbers
3rd
46th
Taxicab Numbers
6th
89th
Ten-pin Bowling
7th
113th
Tic-tac-toe
6th
160th
Time Distance
8th
149th
Topological Sort
5th
104th
Tower of Hanoi
23rd
107th
Transpose Sentence
9th
166th
Trinomial Triangle
10th
132nd
Ulam Sequence
3rd
62nd
United States
12th
353rd
Vampire Numbers
10th
230th
Van Eck Sequence
12th
230th
Zeckendorf Representation
9th
143rd
Zodiac Signs
7th
137th
γ
9th
66th
λ
61st71st
29th
π
20th
263rd
τ
19th
189th
φ
30th
201st
√2
14th
266th
𝑒
19th
309th16th