12 Days of Christmas
252nd
Abundant Numbers
39th
Abundant Numbers (Long)
5th
Catalan Numbers
77th
Christmas Trees
178th
Collatz
133rd
CSS Colors
79th
Cubes
152nd
Divisors
1st
Emirp Numbers
76th
Emirp Numbers (Long)
40th
Evil Numbers
1st
Evil Numbers (Long)
35th
Fibonacci
176th
Fizz Buzz
54th
Foo Fizz Buzz Bar
1st
Fractions
83rd
Game of Life
66th
Happy Numbers
176th
Happy Numbers (Long)
94th
Inventory Sequence
74th
Kolakoski Sequence
19th
Leap Years
137th
Leyland Numbers
7th
Look and Say
81st
Lucky Numbers
71st
Niven Numbers
68th
Niven Numbers (Long)
37th
Odious Numbers
1st
Odious Numbers (Long)
1st
Ordinal Numbers
169th
Pangram Grep
1st
Pascal’s Triangle
1st
Pernicious Numbers
86th
Pernicious Numbers (Long)
56th
Prime Numbers
1st
Prime Numbers (Long)
1st
Quine
67th
Recamán
88th
Reverse Polish Notation
27th
Smith Numbers
37th
Tongue-twisters
160th
United States
74th
Vampire Numbers
31st
Van Eck Sequence
65th
π
186th
τ
149th
φ
129th
√2
1st
𝑒
1st33rd