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 A283863 Number of 7Xn 0..1 arrays with no 1 equal to more than three of its horizontal, diagonal and antidiagonal neighbors. 1
 128, 16384, 955680, 71903903, 5921518755, 457711375590, 35481195059121, 2782923466639665, 217518560684113038, 16981222926091090679, 1326999476774635673172, 103695192517969043697972 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Row 7 of A283857. LINKS R. H. Hardin, Table of n, a(n) for n = 1..210 EXAMPLE Some solutions for n=2 ..1..1. .1..0. .0..1. .0..1. .0..0. .1..1. .1..1. .1..0. .0..1. .0..1 ..0..1. .0..1. .0..1. .1..0. .1..0. .1..0. .0..1. .0..1. .0..1. .0..1 ..0..0. .0..0. .0..1. .0..0. .1..1. .1..0. .0..1. .0..1. .0..0. .1..1 ..0..0. .0..1. .0..1. .0..1. .1..0. .1..1. .1..1. .0..0. .1..1. .1..0 ..0..1. .1..1. .1..0. .1..0. .1..0. .0..1. .1..1. .0..1. .0..0. .1..0 ..1..0. .0..1. .0..1. .1..0. .0..1. .1..0. .1..1. .0..0. .0..1. .0..0 ..1..1. .1..1. .1..0. .0..0. .0..0. .0..0. .0..1. .0..1. .0..0. .1..1 CROSSREFS Cf. A283857. Sequence in context: A188908 A189109 A297380 * A223568 A144321 A051251 Adjacent sequences: A283860 A283861 A283862 * A283864 A283865 A283866 KEYWORD nonn AUTHOR R. H. Hardin, Mar 17 2017 STATUS approved

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Last modified February 20 21:52 EST 2024. Contains 370219 sequences. (Running on oeis4.)