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%I #4 Mar 24 2018 11:32:30
%S 1,10,26,226,1297,8888,60841,421168,2940940,20639456,145157471,
%T 1021952648,7197614571,50704160874,357234289578,2517047832160,
%U 17735602594473,124970744650942,880592489506775,6205028171908948
%N Number of nX6 0..1 arrays with every element equal to 0, 2 or 3 horizontally or vertically adjacent elements, with upper left element zero.
%C Column 6 of A301608.
%H R. H. Hardin, <a href="/A301606/b301606.txt">Table of n, a(n) for n = 1..210</a>
%e Some solutions for n=5
%e ..0..0..0..0..1..0. .0..0..0..1..1..1. .0..0..1..1..1..0. .0..0..0..0..0..1
%e ..0..1..0..0..0..1. .0..1..0..1..0..1. .0..0..1..0..1..1. .0..1..0..1..0..0
%e ..0..0..0..1..0..0. .0..0..0..1..1..1. .0..0..1..1..1..1. .0..0..0..0..0..0
%e ..0..1..0..0..1..0. .1..1..1..0..1..1. .1..1..1..0..0..0. .0..0..1..0..1..1
%e ..0..0..0..0..0..0. .1..1..1..1..1..1. .1..1..1..0..0..0. .0..0..0..0..1..1
%Y Cf. A301608.
%K nonn
%O 1,2
%A _R. H. Hardin_, Mar 24 2018
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