A174155 Number of ways to place 7n nonattacking kings on a 14 x 2n chessboard.

1, 1024, 114606, 5392704, 159636030, 3544192112, 64737165162, 1027533353168, 14677177838054, 193194265398240, 2383116363555182, 27889602664055396, 312546900470579954, 3378090945290324892, 35412239480510055916, 361670315347336810428, 3611858972942315054336, 35375586671457852212944

Offset

0,2

Links

Ray Chandler, Table of n, a(n) for n = 0..1096

Vaclav Kotesovec, Number of ways of placing non-attacking queens and kings on boards of various sizes

Vaclav Kotesovec, G.f.

Index entries for linear recurrences with constant coefficients, order 124.

Crossrefs

Column k=7 of A350819.

Cf. A018807, A061594, A061593, A173782, A173783, A174154.

Sequence in context: A016961 A224394 A224027 * A269205 A224284 A224207

Adjacent sequences: A174152 A174153 A174154 * A174156 A174157 A174158

Keyword

nonn

Author

Vaclav Kotesovec, Mar 10 2010

Extensions

More terms from Jinyuan Wang, Feb 26 2020

a(0)=1 prepended by Andrew Howroyd, Mar 26 2023

Status

approved