A151582 Number of permutations of 1..n arranged in a circle with exactly 9 adjacent element pairs in decreasing order.

0, 10, 11143, 1831644, 132439905, 5925941490, 192648942945, 4982201574576, 108507581733075, 2068026851853900, 35442327497832350, 557245611341867160, 8160353475203019510, 112618455705219419340, 1478355077007310516350, 18597419323476152223600

Offset

9,2

Links

Andrew Howroyd, Table of n, a(n) for n = 9..500

Crossrefs

Column k=9 of A334218.

Sequence in context: A267206 A091253 A267887 * A318794 A229229 A190946

Adjacent sequences: A151579 A151580 A151581 * A151583 A151584 A151585

Keyword

nonn

Author

R. H. Hardin, May 21 2009

Extensions

Terms a(17) and beyond from Andrew Howroyd, May 05 2020

Status

approved