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%I #6 Nov 22 2013 09:09:33
%S 5,24,139,853,5241,32089,196698,1205422,7387476,45274221,277463582,
%T 1700438900,10421159854,63866201729,391404773682,2398728792093,
%U 14700637816523,90093032996396,552136219923131,3383773364176424
%N Number of (2+1)X(n+1) 0..1 arrays with every element equal to some horizontal or antidiagonal neighbor, with top left element zero
%C Row 2 of A232316
%H R. H. Hardin, <a href="/A232318/b232318.txt">Table of n, a(n) for n = 1..210</a>
%F Empirical: a(n) = 5*a(n-1) +9*a(n-2) -10*a(n-3) -19*a(n-4) +9*a(n-5) +21*a(n-6) -15*a(n-8) -5*a(n-9) +5*a(n-10) +4*a(n-11) -2*a(n-12) for n>14
%e Some solutions for n=7
%e ..0..0..1..0..1..0..0..1....0..0..0..0..0..1..0..0....0..0..0..0..1..1..1..0
%e ..0..1..0..1..1..0..1..0....0..0..1..1..1..1..1..0....0..1..1..1..0..1..0..0
%e ..0..0..1..1..1..1..0..0....1..1..0..0..1..1..0..0....1..0..0..0..1..1..1..1
%K nonn
%O 1,1
%A _R. H. Hardin_, Nov 22 2013
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