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%I #4 May 03 2018 12:55:26
%S 21,237,186,842,2247,6264,15517,40239,101894,275913,742329,1970215,
%T 5207495,13783510,36338058,96289588,255453841,676717260,1792458697,
%U 4748791014,12573506308,33301968773,88224464420,233692020122
%N Number of nX7 0..1 arrays with every element unequal to 0, 1, 3 or 5 king-move adjacent elements, with upper left element zero.
%C Column 7 of A303969.
%H R. H. Hardin, <a href="/A303968/b303968.txt">Table of n, a(n) for n = 1..210</a>
%e Some solutions for n=5
%e ..0..0..1..0..0..0..0. .0..1..1..1..1..1..1. .0..0..0..1..0..0..0
%e ..0..0..0..0..0..0..1. .1..1..1..1..1..1..1. .0..0..0..0..0..0..0
%e ..0..0..0..0..0..1..1. .1..1..1..1..1..1..1. .0..0..0..0..0..0..1
%e ..0..0..0..0..1..1..1. .0..1..1..1..1..1..1. .1..0..0..0..0..0..0
%e ..0..0..0..1..1..1..1. .1..1..1..1..1..0..1. .0..0..0..0..0..0..0
%Y Cf. A303969.
%K nonn
%O 1,1
%A _R. H. Hardin_, May 03 2018
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