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%I #4 Mar 31 2018 15:42:15
%S 8,81,748,7070,67070,636852,6048836,57457232,545796112,5184660760,
%T 49250608992,467846412016,4444215843808,42216967044320,
%U 401031909830432,3809525073635904,36187846859821376,343759454672598656
%N Number of nX4 0..1 arrays with every element equal to 0, 1, 2 or 4 horizontally or antidiagonally adjacent elements, with upper left element zero.
%C Column 4 of A302069.
%H R. H. Hardin, <a href="/A302065/b302065.txt">Table of n, a(n) for n = 1..210</a>
%F Empirical: a(n) = 16*a(n-1) -76*a(n-2) +148*a(n-3) -124*a(n-4) +36*a(n-5) for n>6
%e Some solutions for n=5
%e ..0..1..0..1. .0..0..1..0. .0..0..1..0. .0..1..0..0. .0..1..1..0
%e ..1..0..1..0. .1..0..1..1. .1..0..1..1. .0..1..0..0. .1..1..1..1
%e ..1..0..1..0. .0..1..0..1. .1..0..0..1. .1..1..0..0. .1..0..0..0
%e ..0..1..0..1. .1..1..0..1. .1..1..1..0. .0..1..0..1. .1..1..0..0
%e ..1..1..0..0. .1..1..0..1. .0..0..0..1. .0..1..0..0. .1..1..1..1
%Y Cf. A302069.
%K nonn
%O 1,1
%A _R. H. Hardin_, Mar 31 2018
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