%I
%S 1,4,9,21,49,114,266,620,1446,3372,7864,18340,42772,99752,232640,
%T 542560,1265352,2951040,6882384,16051024,37434032,87303264,203607776,
%U 474851968,1107444896,2582771648,6023513600,14047976768,32762547648,76408478336
%N Number of nX5 0..1 arrays with every 1 horizontally or antidiagonally adjacent to 2 neighboring 1s.
%C Column 5 of A297299.
%H R. H. Hardin, <a href="/A297296/b297296.txt">Table of n, a(n) for n = 1..210</a>
%F Empirical: a(n) = 2*a(n1) +2*a(n2) 2*a(n3) 2*a(n4) for n>5
%e Some solutions for n=5
%e ..0..0..0..0..0. .0..0..0..0..0. .0..0..0..0..0. .0..0..0..1..1
%e ..0..0..1..1..0. .0..0..1..1..1. .0..0..0..0..0. .0..0..1..1..0
%e ..0..1..1..0..0. .0..1..0..1..0. .0..0..0..0..0. .0..0..0..1..1
%e ..0..0..0..0..0. .1..1..1..0..0. .0..0..0..1..1. .0..0..1..1..0
%e ..0..0..0..0..0. .0..0..0..0..0. .0..0..1..1..0. .0..0..0..0..0
%Y Cf. A297299.
%K nonn
%O 1,2
%A _R. H. Hardin_, Dec 27 2017
