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%I #5 Mar 31 2012 12:36:56
%S 1,64,4124,142108,4401184,168492336,6975234574,276131799334,
%T 10691214945638,418995221883412,16587140609879948,656112048511504958,
%U 25898901930434692628,1022871192914249476820,40441529880066421243639
%N Number of nX3 0..7 arrays with every nonzero element less than or equal to at least two horizontal and vertical neighbors
%C Column 3 of A203443
%H R. H. Hardin, <a href="/A203438/b203438.txt">Table of n, a(n) for n = 1..210</a>
%e Some solutions for n=5
%e ..1..3..3....4..4..0....3..3..0....6..6..5....1..4..4....4..4..4....7..7..2
%e ..2..6..6....4..4..0....4..4..0....6..6..5....2..7..7....7..7..6....7..7..5
%e ..6..6..6....2..6..6....4..4..0....5..1..0....7..7..7....7..7..7....0..7..5
%e ..6..6..0....1..6..6....1..1..1....5..5..0....7..4..7....4..7..7....3..7..7
%e ..3..3..0....0..6..6....0..1..1....5..5..0....7..7..7....3..3..0....3..7..7
%K nonn
%O 1,2
%A _R. H. Hardin_ Jan 01 2012