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 A284081 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 two elements. 1
 0, 0, 353608, 48994058, 6011835223, 700044712076, 74965549398304, 7663959789277668, 759541318384819140, 73293744586522740828, 6926137628336309991716, 643615455040297408956707 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,3 COMMENTS Row 7 of A284075. LINKS R. H. Hardin, Table of n, a(n) for n = 1..210 EXAMPLE Some solutions for n=3 ..0..0..0. .0..1..0. .0..1..0. .0..0..0. .0..0..0. .0..1..0. .0..0..1 ..0..0..1. .1..1..1. .1..0..1. .1..1..1. .0..0..1. .0..0..1. .0..0..1 ..1..0..0. .1..0..1. .1..0..1. .1..1..0. .1..0..0. .0..1..1. .0..0..1 ..1..0..1. .0..1..0. .1..1..0. .1..1..0. .0..1..1. .0..0..1. .0..0..1 ..1..1..1. .1..0..1. .0..0..1. .1..0..1. .0..1..1. .0..0..1. .1..1..1 ..0..1..1. .0..0..0. .1..1..1. .0..0..0. .1..1..1. .1..1..1. .0..1..1 ..0..1..1. .0..1..0. .1..1..0. .1..0..1. .0..0..1. .1..1..1. .1..1..0 CROSSREFS Cf. A284075. Sequence in context: A140942 A294858 A274900 * A050515 A179709 A186217 Adjacent sequences: A284078 A284079 A284080 * A284082 A284083 A284084 KEYWORD nonn AUTHOR R. H. Hardin, Mar 19 2017 STATUS approved

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Last modified April 13 12:32 EDT 2024. Contains 371641 sequences. (Running on oeis4.)