A178986 - OEIS

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A178986

Number of ways to place n nonattacking amazons (superqueens) on an n X n toroidal board.

0

1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 44, 0, 1092, 0, 0, 0, 16932, 0, 24776, 0, 0, 0, 1881492, 0

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,11

COMMENTS

An amazon (superqueen) moves like a queen and a knight.

LINKS

Table of n, a(n) for n=1..24.

V. Kotesovec, Non-attacking chess pieces, 6ed, 2013.

Paul Monsky, Superqueens: Problem E3162, American Mathematical Monthly, vol. 96 (1989), p.258-259.

CROSSREFS

Cf. A051223, A051906, A085801, A000170, A178975.

Sequence in context: A271141 A350718 A022075 * A174730 A037939 A040010

Adjacent sequences: A178983 A178984 A178985 * A178987 A178988 A178989

KEYWORD

nonn,more

AUTHOR

Vaclav Kotesovec, Jan 03 2011

STATUS

approved