A195659 -id:A195659 - cp's OEIS frontend

A195654 Number of ways to place 10n nonattacking kings on a 20 X 2n cylindrical chessboard.

11264, 48132, 251126, 1473764, 9434784, 64923594, 476033636, 3694894500, 30179587994, 257860425672, 2290966142762, 21042965606234, 198765197377402, 1921681775292272, 18940490557328616, 189679152583318596, 1924757095250611458, 19746535064318923758

Offset: 1

Vaclav Kotesovec, Sep 22 2011

nonn

This cylinder is horizontal: a chessboard where it is supposed that rows 1 and 2n are in contact (number of columns = 20, number of rows = 2n).

Alex V. Breger, Table of n, a(n) for n = 1..500
Artem M. Karavaev, Zealint blog (in Russian)
V. Kotesovec, Non-attacking chess pieces
Vaclav Kotesovec, Generating function
Index entries for linear recurrences with constant coefficients, order 916.

Cf. A137432, A195653, A195649, A195659.

Recurrence order is 916.

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

Original entry on oeis.org

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

Offset: 1

Vaclav Kotesovec, Sep 22 2011

nonn

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.

Column k=10 of A350819.

Cf. A018807, A195654, A195659.

Recurrence order is 1318.

cp's OEIS Frontend

A195654 Number of ways to place 10n nonattacking kings on a 20 X 2n cylindrical chessboard.

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