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 A283956 Number of 7Xn 0..1 arrays with no 1 equal to more than three of its horizontal, diagonal and antidiagonal neighbors, with the exception of exactly one element. 1
 0, 0, 597042, 68693470, 6816984648, 669777003928, 62944601744067, 5709831013093658, 508781396370757815, 44682472147852468812, 3874470768927233440485, 332663634061493461202020 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,3 COMMENTS Row 7 of A283950. LINKS R. H. Hardin, Table of n, a(n) for n = 1..210 EXAMPLE Some solutions for n=3 ..0..0..0. .0..0..0. .0..1..0. .0..1..0. .0..1..0. .0..0..0. .0..0..0 ..1..1..0. .0..0..0. .0..0..0. .1..1..0. .0..0..0. .0..1..0. .1..1..0 ..1..0..0. .1..1..1. .1..0..0. .0..1..1. .1..1..1. .0..0..1. .1..0..1 ..1..1..1. .0..0..0. .0..1..1. .1..0..0. .0..1..1. .1..1..1. .0..0..1 ..0..0..1. .1..0..1. .1..0..1. .1..1..1. .1..0..0. .1..0..0. .1..1..1 ..0..0..1. .1..1..1. .0..0..0. .0..1..0. .1..0..0. .1..1..1. .1..0..0 ..0..0..1. .1..0..0. .0..0..1. .1..1..1. .0..1..0. .0..1..0. .0..0..1 CROSSREFS Cf. A283950. Sequence in context: A236736 A205270 A187643 * A151435 A143910 A206598 Adjacent sequences: A283953 A283954 A283955 * A283957 A283958 A283959 KEYWORD nonn AUTHOR R. H. Hardin, Mar 18 2017 STATUS approved

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Last modified June 25 01:38 EDT 2024. Contains 373691 sequences. (Running on oeis4.)