Abundant Numbers
401st
Divisors
1st1,741st
Emirp Numbers
325th
Evil Numbers
201st2,350th
803rd
Fibonacci
3,087th242nd49th7,775th
Fizz Buzz
145th
3,951st
Happy Numbers
494th
Kolakoski Sequence
556th
Look and Say
569th
Niven Numbers
133rd
1,467th
Odious Numbers
160th
694th
Ordinal Numbers
129th
Pangram Grep
112th
213th
Pascal’s Triangle
1st
Pernicious Numbers
1,254th
1,083rd
Prime Numbers
1st1,009th
965th
Quine
288th
3,436th
Reversi
319th
Rijndael S-box
511th
Sierpiński Triangle
636th
Tower of Hanoi
300th
𝑒
214th