A195649 Number of ways to place 10n nonattacking kings on a 20 x 2n chessboard.

11264, 5266069, 714611200, 50123713793, 2335042206624, 82425144219429, 2383116363555182, 59315924213143597, 1314578079936797520, 26568150968269086211, 498306336520679626558, 8788579757709800395287, 147246060712874767006100, 2362334876238883501403023

Offset: 1

Author

Vaclav Kotesovec, Sep 22 2011

Keywords

• nonn

Links

• Alex V. Breger, Table of n, a(n) for n = 1..500
• Vaclav Kotesovec, Non-attacking chess pieces
• Vaclav Kotesovec, Generating function
• Index entries for linear recurrences with constant coefficients, order 1318.

Crossrefs

Column k=10 of A350819.

Cf. A018807, A195654, A195659.

Formula

Recurrence order is 1318.