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A283385 Number of nX7 0..1 arrays with no 1 equal to more than two of its horizontal, vertical and antidiagonal neighbors, with the exception of exactly two elements. 1

%I

%S 0,1734,257416,20788531,1644385909,120672330232,8473366210380,

%T 577497122717510,38429377558548084,2510034447031636894,

%U 161474518006208921112,10257528561081995711619,644676948221905320696958

%N Number of nX7 0..1 arrays with no 1 equal to more than two of its horizontal, vertical and antidiagonal neighbors, with the exception of exactly two elements.

%C Column 7 of A283386.

%H R. H. Hardin, <a href="/A283385/b283385.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=2

%e ..1..0..1..0..1..1..0. .0..0..1..0..1..1..0. .1..0..1..0..0..0..1

%e ..1..1..1..1..0..1..0. .1..1..1..1..0..1..1. .1..1..1..1..1..0..1

%Y Cf. A283386.

%K nonn

%O 1,2

%A _R. H. Hardin_, Mar 06 2017

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Last modified January 21 05:13 EST 2022. Contains 350473 sequences. (Running on oeis4.)