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A298887 Number of nX7 0..1 arrays with every element equal to 1, 2, 4, 6 or 8 king-move adjacent elements, with upper left element zero.

%I A298887 #4 Jan 28 2018 08:47:04
%S A298887 8,95,63,240,444,814,1818,3663,7496,16544,33596,70466,148451,311053,
%T A298887 653252,1372584,2873709,6036087,12668750,26606071,55876191,117364939,
%U A298887 246515244,517702247,1087644299,2284968402,4799996646,10083584000
%N A298887 Number of nX7 0..1 arrays with every element equal to 1, 2, 4, 6 or 8 king-move adjacent elements, with upper left element zero.
%C A298887 Column 7 of A298888.
%H A298887 R. H. Hardin, <a href="/A298887/b298887.txt">Table of n, a(n) for n = 1..210</a>
%e A298887 Some solutions for n=7
%e A298887 ..0..1..0..1..0..0..1. .0..0..0..1..1..1..0. .0..0..1..0..0..1..1
%e A298887 ..1..0..0..1..1..0..1. .1..0..0..0..0..0..1. .1..0..1..1..1..0..0
%e A298887 ..0..1..1..1..0..1..0. .0..1..0..0..0..1..0. .1..0..0..0..1..1..1
%e A298887 ..0..1..1..1..1..1..0. .0..1..0..0..0..1..0. .1..0..0..0..0..1..0
%e A298887 ..1..1..1..1..0..1..1. .1..0..0..0..0..0..1. .0..0..0..0..1..0..0
%e A298887 ..0..0..0..1..1..0..0. .1..0..1..0..1..0..1. .1..1..1..0..0..1..1
%e A298887 ..1..1..1..0..0..1..0. .0..0..1..0..1..0..0. .0..0..0..1..1..0..1
%Y A298887 Cf. A298888.
%K A298887 nonn
%O A298887 1,1
%A A298887 _R. H. Hardin_, Jan 28 2018