A159144 Number of permutations of 1..n containing the relative rank sequence { 231645 } at any spacing.

1, 37, 892, 18108, 339637, 6151057, 110168393, 1979041113, 35974376270, 665655317842

Offset

6,2

Comments

Same series for 465132 312645 231564 546213 546132 465213 312564

Links

Table of n, a(n) for n=6..15.

Eric Weisstein's World of Mathematics, Permutation Pattern

Crossrefs

A056986 A158005 A158423

Sequence in context: A159084 A159133 A159131 * A159092 A159142 A159123

Adjacent sequences: A159141 A159142 A159143 * A159145 A159146 A159147

Keyword

nonn

Author

R. H. Hardin, Apr 05 2009

Status

approved