%I #5 Mar 31 2012 12:36:15
%S 0,7628,173792,1526520,8485264,33638540,111406336,311438060,777099536,
%T 1756270204,3735055528,7288245592,13670157716,24530310400,42135558056,
%U 69657825372,112605206044,176212748340,270847626492,404983049496
%N Number of arrangements of 8 nonzero numbers x(i) in -n..n with the sum of trunc(x(i)/x(i+1)) equal to zero
%C Row 7 of A189545
%H R. H. Hardin, <a href="/A189551/b189551.txt">Table of n, a(n) for n = 1..94</a>
%e Some solutions for n=5
%e .-5...-5...-4...-4...-4...-5...-4...-5...-4...-5...-5...-5...-5...-5...-4...-5
%e .-5...-5...-5...-5...-5...-5...-5...-5...-5...-5...-5...-5...-5...-5...-5...-5
%e .-5...-4...-5...-4...-5....1...-4....4...-5....4....5....2....1...-3....1....5
%e ..5....3...-2...-3...-5...-3....5....5....3....1....5....2...-5....2...-5....4
%e ..4....2...-4....4...-4...-1....3...-1....2....5...-2....5...-3...-2...-1....4
%e .-3...-3....2...-2....2...-1...-1....2...-2...-1....5...-3...-1...-5....1...-1
%e ..3...-4...-2....3....3....3...-5...-5...-2....3....4...-3...-3...-4....2...-2
%e .-4....2...-3....5...-3...-5...-4...-1....2....2....5...-4....4....3....2...-1
%K nonn
%O 1,2
%A _R. H. Hardin_ Apr 23 2011