%I #5 Mar 31 2012 12:36:34
%S 2,65,2715,199923,16089057,1382332582,119026441960,10314841920242,
%T 893422225702521,77438142132961570,6711121950891144754,
%U 581664320030297340439,50412657929233287557664,4369297837622133342788917
%N Number of nX4 0..4 arrays with values 0..4 introduced in row major order and each element equal to one or two horizontal and vertical neighbors
%C Column 4 of A198669
%H R. H. Hardin, <a href="/A198665/b198665.txt">Table of n, a(n) for n = 1..74</a>
%e Some solutions with all values 0 to 4 for n=3
%e ..0..1..2..2....0..0..1..1....0..0..1..1....0..0..1..1....0..1..1..2
%e ..0..1..3..4....2..3..3..3....2..3..3..3....2..2..3..3....0..0..1..2
%e ..3..3..3..4....2..4..4..3....2..4..4..4....4..4..1..1....3..3..4..4
%K nonn
%O 1,1
%A _R. H. Hardin_ Oct 28 2011
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