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A195648
Number of ways to place 9n nonattacking kings on a 18 x 2n chessboard.
4
5120, 1501674, 144605184, 7683664202, 282359109140, 8080813574550, 193194265398240, 4035559337688370, 75925129079783308, 1314578079936797520, 21279238303065874504, 325878859655043000344, 4765036384361599508980, 67005992305769489072298, 911373843678367079288192
(list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
Alex V. Breger, Table of n, a(n) for n = 1..1000
Vaclav Kotesovec, Non-attacking chess pieces
Vaclav Kotesovec, Generating function
Index entries for linear recurrences with constant coefficients, order 548.
FORMULA
Recurrence order is 548.
CROSSREFS
Column k=9 of A350819.
Cf. A174558, A018807, A195653, A195658.
Sequence in context: A187030 A237328 A186968 * A252919 A255779 A237206
Adjacent sequences: A195645 A195646 A195647 * A195649 A195650 A195651
KEYWORD
nonn
AUTHOR
Vaclav Kotesovec, Sep 22 2011
STATUS
approved

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Last modified October 21 05:36 EDT 2024. Contains 376969 sequences.
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