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 A298655 Number of nXn 0..1 arrays with every element equal to 1, 2, 4, 6 or 7 king-move adjacent elements, with upper left element zero. 0
 0, 3, 15, 40, 177, 1116, 7964, 89543, 1367704, 32451809, 1028816587 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Diagonal of A298660. LINKS EXAMPLE Some solutions for n=5 ..0..1..0..0..1. .0..0..0..0..0. .0..1..1..1..1. .0..0..0..0..1 ..0..1..1..1..0. .1..1..1..1..1. .0..0..1..1..0. .1..1..1..1..1 ..0..1..1..1..0. .0..0..0..0..0. .1..1..1..1..0. .0..1..1..0..0 ..0..1..0..1..0. .1..1..1..1..1. .1..0..0..0..1. .0..1..1..1..1 ..1..0..1..0..1. .0..0..0..0..0. .0..0..0..1..0. .1..1..1..0..0 CROSSREFS Cf. A298660. Sequence in context: A014309 A298049 A298884 * A299608 A249835 A295938 Adjacent sequences:  A298652 A298653 A298654 * A298656 A298657 A298658 KEYWORD nonn AUTHOR R. H. Hardin, Jan 24 2018 STATUS approved

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Last modified January 20 10:58 EST 2020. Contains 331081 sequences. (Running on oeis4.)