Number of permutations of 1..n containing the relative rank sequence { 231645 } at any spacing.
A159144
Number of permutations of 1..n containing the relative rank sequence { 231645 } at any spacing.
Terms
- a(0) =1a(1) =37a(2) =892a(3) =18108a(4) =339637a(5) =6151057a(6) =110168393a(7) =1979041113a(8) =35974376270a(9) =665655317842
External references
- oeis: A159144