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 A304051 Number of n X n 0..1 arrays with every element unequal to 1, 2, 4 or 5 king-move adjacent elements, with upper left element zero. 0
 0, 3, 6, 26, 596, 3434, 77360, 4890117, 181435839, 30401698932 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Diagonal of A304058. LINKS EXAMPLE Some solutions for n=5 ..0..1..0..0..1. .0..1..1..0..1. .0..1..0..1..1. .0..0..0..1..0 ..1..0..0..1..0. .0..1..1..1..1. .0..0..1..1..0. .1..0..1..0..0 ..1..1..0..1..1. .0..0..1..1..0. .0..1..1..1..1. .0..1..1..1..0 ..1..1..0..1..1. .1..0..1..1..0. .0..0..1..1..0. .0..0..1..0..1 ..0..0..0..0..0. .0..1..1..1..1. .0..1..0..1..1. .0..1..0..0..0 CROSSREFS Cf. A304058. Sequence in context: A214309 A005646 A033194 * A128437 A200654 A208665 Adjacent sequences:  A304048 A304049 A304050 * A304052 A304053 A304054 KEYWORD nonn AUTHOR R. H. Hardin, May 05 2018 STATUS approved

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Last modified December 4 12:45 EST 2020. Contains 338923 sequences. (Running on oeis4.)