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

Author

R. H. Hardin, May 21 2009

Keywords

• nonn

Links

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

Crossrefs

Column k=9 of A334218.

Extensions

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