A195648 Number of ways to place 9n nonattacking kings on a 18 x 2n chessboard.
5120, 1501674, 144605184, 7683664202, 282359109140, 8080813574550, 193194265398240, 4035559337688370, 75925129079783308, 1314578079936797520, 21279238303065874504, 325878859655043000344, 4765036384361599508980, 67005992305769489072298, 911373843678367079288192
Offset: 1
Keywords
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.