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%I #5 Mar 31 2012 12:36:37
%S 44,336,2146,15708,118280,888420,6715618,51077518,390278378,
%T 2993722414,23038998514,177794832922,1375379617514,10662124449466,
%U 82808224932874,644200988262616,5018935818153796,39154328577073846,305823285072243150
%N Number of -4..4 arrays x(0..n+1) of n+2 elements with zero sum and no two neighbors summing to zero
%C Column 4 of A199832
%H R. H. Hardin, <a href="/A199828/b199828.txt">Table of n, a(n) for n = 1..200</a>
%e Some solutions for n=3
%e ..1...-1....4....0....1....0....0...-1...-3....4...-1...-3....0...-3...-4...-1
%e .-3...-1....0...-1....3....3...-1...-1....4...-3....4....4...-2....1....3...-1
%e ..1....0...-2....0....0...-1...-2...-4....1....2...-2...-3...-2....0....4....0
%e ..3....2....0....3...-4...-3....3....3...-2...-4...-2....4....4....2...-3....3
%e .-2....0...-2...-2....0....1....0....3....0....1....1...-2....0....0....0...-1
%K nonn
%O 1,1
%A _R. H. Hardin_ Nov 11 2011
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