Number of permutations in S_n that are factorials of permutations in lexicographic order.
A290024
Number of permutations in S_n that are factorials of permutations in lexicographic order.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =4a(4) =15a(5) =72a(6) =425a(7) =3038a(8) =24538a(9) =221220a(10) =2221701
External references
- oeis: A290024