12 Days of Christmas
532nd
99 Bottles of Beer
330th
Abundant Numbers
142nd
Abundant Numbers (Long)
86th
Arithmetic Numbers
149th
Catalan Numbers
1st
Christmas Trees
164th
Collatz
100th
46th103rd42nd
Day of Week
101st
Diamonds
177th
Divisors
115th
Emirp Numbers
283rd
Emirp Numbers (Long)
132nd
Evil Numbers
244th
Evil Numbers (Long)
159th
Fibonacci
54th
156th
52nd
Fizz Buzz
205th
Foo Fizz Buzz Bar
127th
Fractions
130th
Gijswijt’s Sequence
109th
Happy Numbers
95th
Happy Numbers (Long)
173rd
Intersection
114th
Inventory Sequence
78th
ISBN
118th
Kolakoski Sequence
125th
Leap Years
51st
20th
Levenshtein Distance
145th
Leyland Numbers
233rd
10th
ln 2
112th
Look and Say
314th
Lucky Numbers
195th
Lucky Tickets
109th
Medal Tally
8th68th
Niven Numbers
69th
Niven Numbers (Long)
57th
Number Spiral
140th
Odious Numbers
249th
Odious Numbers (Long)
148th
Ordinal Numbers
126th
Pangram Grep
112th
Pascal’s Triangle
248th
Pernicious Numbers
72nd
Pernicious Numbers (Long)
81st
Prime Numbers
353rd
Prime Numbers (Long)
219th
Recamán
149th
Reverse Polish Notation
1st
Seven Segment
346th
Smith Numbers
146th
Sudoku (Fill-in)
59th
Tongue-twisters
216th
United States
291st
Van Eck Sequence
145th
Zodiac Signs
101st
𝑒
240th