12 Days of Christmas
495th
99 Bottles of Beer
280th
Abundant Numbers
51st
Abundant Numbers (Long)
28th
Arithmetic Numbers
122nd
Catalan Numbers
1st
Christmas Trees
113th
Collatz
93rd
44th7th40th
Day of Week
69th
Diamonds
152nd
Divisors
1st
Emirp Numbers
244th
Emirp Numbers (Long)
113th
Evil Numbers
238th
Evil Numbers (Long)
152nd
Fibonacci
53rd
145th
50th
Fizz Buzz
54th
Foo Fizz Buzz Bar
1st
Fractions
67th
Gijswijt’s Sequence
97th
Happy Numbers
118th
Happy Numbers (Long)
157th
Intersection
56th
Inventory Sequence
61st
ISBN
75th
Kolakoski Sequence
105th
Leap Years
49th
20th
Levenshtein Distance
126th
Leyland Numbers
218th
10th
ln 2
97th
Look and Say
305th
Lucky Numbers
183rd
Lucky Tickets
90th
Medal Tally
8th57th
Niven Numbers
66th
Niven Numbers (Long)
37th
Number Spiral
124th
Odious Numbers
239th
Odious Numbers (Long)
143rd
Ordinal Numbers
81st
Pangram Grep
52nd
Pascal’s Triangle
229th
Pernicious Numbers
67th
Pernicious Numbers (Long)
69th
Prime Numbers
342nd
Prime Numbers (Long)
182nd
Recamán
115th
Reverse Polish Notation
1st
Seven Segment
341st
Smith Numbers
135th
Sudoku (Fill-in)
39th
Tongue-twisters
176th
United States
284th
Van Eck Sequence
123rd
Zodiac Signs
87th
𝑒
228th