A195650 Number of ways to place 11n nonattacking kings on a 22 x 2n chessboard.

24576, 18174084, 3449705600, 317076250136, 18589546217696, 803491953235264, 27889602664055396, 821112680030028632, 21279238303065874504, 498306336520679626558, 10749154284380665611224, 216711725342137199240416, 4129262403388762742636600

Offset

1,1

Links

Alex V. Breger, Table of n, a(n) for n = 1..500

Vaclav Kotesovec, Non-attacking chess pieces

Vaclav Kotesovec, Denominator of the generating function

Formula

Recurrence order is 2321.

Crossrefs

Column k=11 of A350819.

Cf. A018807, A195655, A195660.

Sequence in context: A195655 A203983 A188791 * A189184 A321148 A216069

Adjacent sequences: A195647 A195648 A195649 * A195651 A195652 A195653

Keyword

nonn

Author

Vaclav Kotesovec, Sep 22 2011

Status

approved