A159165 Number of permutations of 1..n containing the relative rank sequence { 254613 } at any spacing.

1, 37, 894, 18211, 342874, 6232019, 111948601, 2015190380, 36671453377, 678640743735

Offset

6,2

Comments

Same series for 354162 423615 261453 516324 316452 461325 523164

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: A159159 A159149 A159172 * A159168 A159147 A159166

Adjacent sequences: A159162 A159163 A159164 * A159166 A159167 A159168

Keyword

nonn

Author

R. H. Hardin Apr 05 2009

Status

approved