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 A316877 Number of nXn 0..1 arrays with every element unequal to 0, 1, 2, 4, 5, 6 or 7 king-move adjacent elements, with upper left element zero. 0
 1, 4, 37, 452, 18847, 1187727, 180224021, 79732305036, 91692297769706 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Diagonal of A316883. LINKS EXAMPLE Some solutions for n=5 ..0..0..0..0..0. .0..0..0..1..1. .0..1..0..1..0. .0..0..1..0..0 ..0..0..0..0..0. .0..0..0..1..1. .0..0..0..0..0. .0..1..0..0..0 ..1..0..1..0..0. .1..0..0..0..1. .0..0..0..0..0. .0..1..0..1..0 ..0..0..0..1..0. .1..0..0..0..1. .1..0..1..0..0. .1..1..1..0..1 ..0..0..0..0..1. .0..0..0..0..0. .1..0..1..0..0. .1..1..1..1..1 CROSSREFS Cf. A316883. Sequence in context: A070768 A221630 A235135 * A349254 A277638 A352237 Adjacent sequences: A316874 A316875 A316876 * A316878 A316879 A316880 KEYWORD nonn AUTHOR R. H. Hardin, Jul 15 2018 STATUS approved

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Last modified March 21 18:35 EDT 2023. Contains 361410 sequences. (Running on oeis4.)