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%I #4 Aug 24 2018 11:11:17
%S 13,18,41,55,136,345,842,2167,5544,14244,36572,94381,243153,629090,
%T 1626951,4215276,10927245,28335336,73504819,190696269,494767839,
%U 1283719592,3330784937,8642038996,22422738925,58177733612,150947560518
%N Number of nX6 0..1 arrays with every element unequal to 0, 1, 3 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
%C Column 6 of A318350.
%H R. H. Hardin, <a href="/A318348/b318348.txt">Table of n, a(n) for n = 1..210</a>
%e Some solutions for n=5
%e ..0..0..0..1..1..1. .0..1..1..1..1..0. .0..0..0..0..0..0. .0..0..0..0..1..1
%e ..0..0..0..0..1..1. .0..0..1..1..1..1. .0..0..0..0..1..0. .0..0..0..0..0..1
%e ..1..0..0..0..0..1. .0..0..0..1..1..1. .0..0..0..0..0..0. .0..1..0..0..0..0
%e ..1..1..0..0..0..0. .0..0..0..0..1..1. .1..0..0..0..0..0. .0..0..0..0..0..0
%e ..1..1..1..0..0..0. .1..0..0..0..0..1. .1..1..0..0..0..0. .0..0..0..0..0..0
%Y Cf. A318350.
%K nonn
%O 1,1
%A _R. H. Hardin_, Aug 24 2018