%I #4 Jan 04 2018 22:15:03
%S 1,15,34,93,502,1443,4676,19601,62749,212944,806349,2715704,9383104,
%T 34004795,117138709,407907961,1450394287,5045390250,17630646061,
%U 62173678114,217189833443,760130838978,2670989983319,9347287498273
%N Number of nX4 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 2 or 4 neighboring 1s.
%C Column 4 of A297733.
%H R. H. Hardin, <a href="/A297729/b297729.txt">Table of n, a(n) for n = 1..210</a>
%F Empirical: a(n) = a(n-1) +a(n-2) +31*a(n-3) -6*a(n-4) +18*a(n-5) -153*a(n-6) +7*a(n-7) -67*a(n-8) +243*a(n-9) -4*a(n-10) -3*a(n-11) -89*a(n-12) +29*a(n-13) +67*a(n-14) -25*a(n-15) -44*a(n-16) -4*a(n-17) +12*a(n-18) +3*a(n-19)
%e Some solutions for n=7
%e ..0..0..0..0. .0..1..1..0. .0..1..1..0. .0..0..0..0. .0..1..1..0
%e ..0..0..0..0. .0..1..1..0. .1..1..0..0. .1..1..0..0. .1..0..0..1
%e ..0..0..0..0. .0..0..0..0. .0..0..0..0. .0..1..1..0. .0..1..1..0
%e ..0..0..1..0. .0..1..0..0. .0..1..0..0. .0..0..0..0. .0..0..0..0
%e ..0..1..0..1. .1..1..1..0. .1..1..1..0. .1..1..1..1. .0..1..1..0
%e ..0..1..1..0. .0..0..0..0. .1..0..1..0. .1..1..1..1. .1..0..0..1
%e ..0..0..1..1. .0..0..0..0. .0..1..0..0. .0..0..0..0. .0..1..1..0
%Y Cf. A297733.
%K nonn
%O 1,2
%A _R. H. Hardin_, Jan 04 2018