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%I #4 Mar 28 2018 11:02:37
%S 32,233,917,2340,7869,46079,223869,981222,4188971,19744757,93794562,
%T 441318698,2061633703,9717028077,46010651829,218113415765,
%U 1034263991109,4906086778690,23287878252238,110581556348153,525174708228782
%N Number of 6Xn 0..1 arrays with every element equal to 0, 1 or 3 horizontally or antidiagonally adjacent elements, with upper left element zero.
%C Row 6 of A301884.
%H R. H. Hardin, <a href="/A301889/b301889.txt">Table of n, a(n) for n = 1..210</a>
%e Some solutions for n=5
%e ..0..1..1..1..0. .0..1..1..0..1. .0..0..0..1..0. .0..1..0..1..0
%e ..0..1..0..0..1. .0..0..1..0..1. .0..1..1..0..1. .0..1..0..1..0
%e ..0..1..0..0..1. .1..0..1..0..1. .0..1..1..0..1. .1..0..1..0..1
%e ..1..0..1..0..1. .1..0..1..0..1. .1..0..1..0..1. .1..0..1..0..1
%e ..1..0..1..1..0. .0..1..1..0..1. .1..1..0..0..1. .1..1..1..0..1
%e ..1..0..1..0..1. .1..0..1..1..1. .1..0..1..0..0. .0..0..1..1..1
%Y Cf. A301884.
%K nonn
%O 1,1
%A _R. H. Hardin_, Mar 28 2018
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