A323803 Number of permutations p of [n] such that max_{j=1..n} |p(j)-j| = 7.

0, 9360, 115080, 966456, 6791994, 43414690, 264609407, 1583571277, 9541763303, 58695274369, 364677611732, 2271214783228, 14108312731920, 87159560106240, 534932437294080, 3263015911353024, 19810718453429904, 119955619407015668, 725303963303861844

Offset: 7

Author

Alois P. Heinz, Jan 28 2019

Keywords

• nonn
• easy

Links

• Alois P. Heinz, Table of n, a(n) for n = 7..1000

Crossrefs

Column k=7 of A130152.

Cf. A154655, A154656.

Formula

a(n) = A154656(n) - A154655(n).