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%I #5 Mar 31 2012 12:36:19
%S 140,27328,910716,10802667,73725405,353856100,1333341624,4232955454,
%T 11720735320,29213945353,67119317038,143366487211,287901954546,
%U 552087286271,1012169804786,1781377206624,3036183971866,5024176668242
%N Number of arrangements of 9 nonzero numbers x(i) in -n..n 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 Row 8 of A190071
%H R. H. Hardin, <a href="/A190078/b190078.txt">Table of n, a(n) for n = 1..58</a>
%e Some solutions for n=4
%e .-4...-4...-4...-4...-4...-4...-4...-4...-4...-4...-4...-4...-4...-4...-4...-4
%e .-4...-4...-4...-4...-4...-4...-4...-4...-4...-4...-4...-4...-4...-4...-4...-4
%e ..1....1....1...-1...-4...-3...-3...-1...-4...-3...-3...-3....1....1...-1...-4
%e ..2....1....1...-4...-2...-4....1....2...-4....1....2....2...-2...-2....3...-4
%e ..4....3....1....4...-1...-3....4...-1...-2...-3...-1....3...-1....2....2....3
%e ..2....2....3...-2....2....1....2....3....1....2....3....3...-1....3....4...-4
%e ..1....3...-4....1....4....3...-1....2....4....3...-4...-3...-1....1...-3....3
%e .-4....3...-2....3...-1...-2...-2...-2....4....3...-4...-4...-3...-3....2....2
%e ..4...-4....4...-2....2....1....4....3...-1....2...-4....2....2...-3...-1...-4
%K nonn
%O 1,1
%A _R. H. Hardin_ May 04 2011
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