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 A317377 Number of nXn 0..1 arrays with every element unequal to 0, 1, 2, 5, 6, 7 or 8 king-move adjacent elements, with upper left element zero. 0
 1, 4, 18, 123, 2089, 75405, 4726521, 569899203, 132364711390, 58207830722829, 48518983884550645, 77042834793060609587 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Diagonal of A317383. LINKS EXAMPLE Some solutions for n=5 ..0..1..0..0..0. .0..0..0..0..0. .0..0..0..1..0. .0..0..0..0..0 ..0..0..0..0..1. .1..0..0..0..0. .0..0..0..0..0. .0..0..1..1..0 ..1..0..0..0..0. .0..0..0..0..0. .0..0..1..0..0. .0..0..0..0..0 ..0..0..0..0..0. .0..0..0..0..0. .1..0..0..1..0. .0..0..0..0..0 ..0..1..0..0..0. .0..0..1..0..0. .0..0..0..0..1. .0..0..0..0..0 CROSSREFS Cf. A317383. Sequence in context: A112294 A292500 A228065 * A215691 A073511 A108704 Adjacent sequences:  A317374 A317375 A317376 * A317378 A317379 A317380 KEYWORD nonn AUTHOR R. H. Hardin, Jul 26 2018 STATUS approved

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Last modified February 20 12:58 EST 2020. Contains 332076 sequences. (Running on oeis4.)