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%I #5 Mar 31 2012 12:36:38
%S 186,1106,6418,37226,217946,1282168,7609122,45311478,270793444,
%T 1623115640,9752855676,58737147004,354446311678,2142635088724,
%U 12972537700224,78651690691664,477462935113362,2901805987457704
%N Number of -3..3 arrays x(0..n+2) of n+3 elements with zero sum and nonzero second and third differences
%C Column 3 of A200204
%H R. H. Hardin, <a href="/A200199/b200199.txt">Table of n, a(n) for n = 1..162</a>
%e Some solutions for n=3
%e ..0...-3...-1....0....0....3....0....1....2...-3....2...-1...-1....1...-1....1
%e ..2...-2....3....3...-1....2...-1....0...-1....3....1...-2....1...-2....0...-1
%e ..0....1...-2...-2....0...-2...-3....3...-3....2....1...-2...-1....2....2....0
%e .-1....0...-2...-2....2...-1...-1...-3....3....3...-2....3....2....0....3...-2
%e ..1....2....2....2...-2....1....2....1....2...-2...-3....3...-1....1...-1....1
%e .-2....2....0...-1....1...-3....3...-2...-3...-3....1...-1....0...-2...-3....1
%K nonn
%O 1,1
%A _R. H. Hardin_ Nov 14 2011
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