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%I A301666 #4 Mar 25 2018 11:36:23
%S A301666 3,61,407,2793,21224,146841,1073621,7703565,55506215,399555430,
%T A301666 2875870497,20706418377,149059329261,1073124611823,7725565402834,
%U A301666 55617663607353,400401309675815,2882556650714509,20752023117855145
%N A301666 Number of nX5 0..1 arrays with every element equal to 1, 2 or 4 horizontally or vertically adjacent elements, with upper left element zero.
%C A301666 Column 5 of A301669.
%H A301666 R. H. Hardin, <a href="/A301666/b301666.txt">Table of n, a(n) for n = 1..210</a>
%e A301666 Some solutions for n=5
%e A301666 ..0..1..1..0..1. .0..0..0..1..1. .0..0..1..1..0. .0..0..1..1..1
%e A301666 ..0..0..1..0..1. .0..1..1..1..1. .1..1..1..0..0. .1..1..0..0..0
%e A301666 ..1..0..1..0..0. .0..1..0..1..0. .0..0..0..1..1. .1..0..0..1..0
%e A301666 ..1..0..0..1..1. .0..1..0..1..0. .0..1..1..1..0. .1..0..1..1..0
%e A301666 ..1..1..0..1..1. .0..0..0..1..1. .0..1..0..0..0. .1..0..1..0..0
%Y A301666 Cf. A301669.
%K A301666 nonn
%O A301666 1,1
%A A301666 _R. H. Hardin_, Mar 25 2018

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