12 Days of Christmas
501st
99 Bottles of Beer
282nd
Abundant Numbers
51st
Abundant Numbers (Long)
28th
Arithmetic Numbers
126th
Catalan Numbers
1st
Christmas Trees
114th
Collatz
95th
46th7th40th
Day of Week
69th
Diamonds
154th
Divisors
1st
Emirp Numbers
249th
Emirp Numbers (Long)
117th
Evil Numbers
240th
Evil Numbers (Long)
155th
Fibonacci
53rd
150th
52nd
Fizz Buzz
54th
Foo Fizz Buzz Bar
1st
Fractions
67th
Gijswijt’s Sequence
99th
Happy Numbers
119th
Happy Numbers (Long)
159th
Intersection
56th
Inventory Sequence
61st
ISBN
77th
Kolakoski Sequence
108th
Leap Years
49th
20th
Levenshtein Distance
126th
Leyland Numbers
219th
10th
ln 2
99th
Look and Say
305th
Lucky Numbers
185th
Lucky Tickets
90th
Medal Tally
8th57th
Niven Numbers
67th
Niven Numbers (Long)
37th
Number Spiral
126th
Odious Numbers
242nd
Odious Numbers (Long)
144th
Ordinal Numbers
81st
Pangram Grep
52nd
Pascal’s Triangle
229th
Pernicious Numbers
67th
Pernicious Numbers (Long)
70th
Prime Numbers
345th
Prime Numbers (Long)
185th
Recamán
115th
Reverse Polish Notation
1st
Seven Segment
342nd
Smith Numbers
135th
Sudoku (Fill-in)
40th
Tongue-twisters
179th
United States
286th
Van Eck Sequence
123rd
Zodiac Signs
88th
𝑒
232nd