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%I #5 Mar 31 2012 12:36:19
%S 6,36,166,922,5136,28656,162028,910716,5162308,29554964,169886511,
%T 978214225,5650347932,32745824773,190185910978,1106505067832,
%U 6449387884888,37654438607875,220148079884339,1288689800220653
%N Number of arrangements of n+1 nonzero numbers x(i) in -3..3 with the sum of div(x(i),x(i+1)), where div(a,b)=a/b produces the integer quotient implying a nonnegative remainder, equal to zero
%C Column 3 of A190071
%H R. H. Hardin, <a href="/A190065/b190065.txt">Table of n, a(n) for n = 1..200</a>
%e Some solutions for n=4
%e .-1...-2....2...-2...-1...-1....3....2....1....2...-1....2...-3....2....2...-1
%e ..3...-3....1....3...-3...-1...-2....1....1....2....1...-3....3....1...-2...-1
%e ..3....2...-1...-2...-3....1...-1...-1....1....3...-3...-3...-1...-1...-2...-1
%e .-2....1....1...-2....2....2....2....2...-1....2...-2...-3...-3...-3...-2....1
%e .-2...-1...-2...-2....3....3....3...-3....1...-1....2....2...-1....2....2...-1
%K nonn
%O 1,1
%A _R. H. Hardin_ May 04 2011
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