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%I #7 Dec 18 2015 18:17:40
%S 0,0,0,73,6486,1127280,455878230,457521123971,1154811828698984,
%T 7352963503841306070,118143132683839293396707,
%U 4790379790527104234486857472,490170667488489136298923882507851
%N Number of n X n symmetric 0..2 arrays with each element equal to at least one horizontal or vertical neighbor, containing at least one 2 and with new values 0..2 introduced in lower triangular row major order
%H R. H. Hardin, <a href="/A192765/b192765.txt">Table of n, a(n) for n = 1..14</a>
%e Some solutions for 4X4
%e ..0..0..1..1....0..0..2..2....0..0..0..1....0..0..1..2....0..0..0..2
%e ..0..0..2..1....0..1..1..2....0..0..1..1....0..0..1..2....0..0..1..2
%e ..1..2..2..1....2..1..2..2....0..1..1..2....1..1..1..1....0..1..1..0
%e ..1..1..1..1....2..2..2..2....1..1..2..2....2..2..1..1....2..2..0..0
%K nonn
%O 1,4
%A _R. H. Hardin_ Jul 09 2011
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