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 A317727 Number of n X n 0..1 arrays with every element unequal to 1, 2, 3, 4, 5, 6, 7 or 8 king-move adjacent elements, with upper left element zero. 1
 0, 7, 161, 19208, 8931649, 16360102553, 119470846769818, 3467887921398599259, 400246130624951550643193, 183679716438894408166683690328, 335165985967839939262823279518153979 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Diagonal of A317733. LINKS R. H. Hardin, Table of n, a(n) for n = 1..13 EXAMPLE Some solutions for n=5 ..0..0..0..1..0. .0..0..0..0..0. .0..0..0..0..0. .0..0..0..1..0 ..0..1..0..0..1. .0..1..0..1..0. .0..1..0..1..0. .0..1..0..1..0 ..1..1..0..1..0. .0..0..0..1..1. .0..0..0..0..1. .0..1..0..1..0 ..0..1..0..0..1. .1..1..0..0..1. .0..0..1..0..0. .0..1..0..1..1 ..0..1..0..0..0. .0..1..0..1..1. .1..1..1..1..1. .0..0..1..0..1 CROSSREFS Cf. A317733. Sequence in context: A208263 A160454 A217241 * A142163 A201179 A218998 Adjacent sequences:  A317724 A317725 A317726 * A317728 A317729 A317730 KEYWORD nonn AUTHOR R. H. Hardin, Aug 05 2018 STATUS approved

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Last modified August 11 03:41 EDT 2022. Contains 356046 sequences. (Running on oeis4.)