%I
%S 128,1760,43959,742688,14011359,236272677,4064720816,67174864630,
%T 1109043586715,17995383255288,290431722641261,4645047826683577,
%U 73887191299532384,1168678595574438796,18400291710723401503
%N Number of 7Xn binary arrays with some element plus some horizontally, diagonally or antidiagonally adjacent neighbor totalling two not more than once.
%C Row 7 of A269075.
%H R. H. Hardin, <a href="/A269081/b269081.txt">Table of n, a(n) for n = 1..210</a>
%e Some solutions for n=3
%e ..1..0..0. .0..0..0. .1..0..1. .1..0..1. .1..0..0. .1..0..1. .0..0..1
%e ..1..0..0. .0..0..1. .1..0..1. .1..0..0. .0..0..1. .1..0..1. .0..0..1
%e ..0..0..0. .1..0..0. .1..0..0. .1..0..0. .1..0..0. .0..0..0. .1..0..0
%e ..1..0..0. .1..0..1. .1..0..0. .0..0..0. .0..0..0. .0..0..0. .1..0..0
%e ..1..0..1. .1..0..1. .0..0..1. .0..0..0. .0..0..0. .0..0..1. .1..0..0
%e ..0..0..1. .0..0..0. .0..0..1. .0..0..1. .1..0..1. .0..0..1. .1..0..1
%e ..0..1..0. .1..0..0. .0..0..1. .1..0..1. .0..0..0. .0..0..1. .0..0..0
%Y Cf. A269075.
%K nonn
%O 1,1
%A _R. H. Hardin_, Feb 19 2016
