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 A317566 Number of nXn 0..1 arrays with every element unequal to 0, 1, 2, 3, 4, 6, 7 or 8 king-move adjacent elements, with upper left element zero. 0
 1, 8, 170, 9513, 1489357, 611929512, 703696012516, 2224035714999860, 19157046204651408615 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Diagonal of A317572. LINKS Table of n, a(n) for n=1..9. EXAMPLE Some solutions for n=5 ..0..0..0..0..0. .0..0..0..0..0. .0..0..0..0..0. .0..0..0..0..0 ..1..1..0..0..0. .0..0..0..1..0. .1..0..1..0..0. .0..1..0..0..0 ..0..0..0..0..0. .0..1..1..0..0. .0..1..1..0..1. .0..0..0..0..0 ..1..1..0..1..0. .1..0..0..0..0. .0..1..0..1..0. .0..1..1..0..0 ..0..0..0..1..0. .0..0..1..1..0. .1..1..1..1..0. .1..0..0..0..0 CROSSREFS Cf. A317572. Sequence in context: A096486 A303463 A300805 * A301444 A333036 A247729 Adjacent sequences: A317563 A317564 A317565 * A317567 A317568 A317569 KEYWORD nonn AUTHOR R. H. Hardin, Jul 31 2018 STATUS approved

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Last modified April 13 14:58 EDT 2024. Contains 371644 sequences. (Running on oeis4.)