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%I #5 Mar 31 2012 12:36:15
%S 20,148,1088,9394,85480,787412,7250142,67449574,630466648,5926141678,
%T 55929815964,529724228140,5032227826544,47929965246944,
%U 457554555905322,4376712118553570,41939283915535994,402511337790992824
%N Number of arrangements of n+1 nonzero numbers x(i) in -5..5 with the sum of floor(x(i)/x(i+1)) equal to zero
%C Column 5 of A189498
%H R. H. Hardin, <a href="/A189494/b189494.txt">Table of n, a(n) for n = 1..139</a>
%e Some solutions for n=6
%e .-2....1....1....1....2...-4...-2...-4...-3....1...-4...-2...-3...-3....2...-2
%e .-5...-5...-4...-5...-5...-5...-5...-5...-4...-4...-4...-5...-4...-5...-4...-4
%e .-1...-2....4...-1...-3...-5...-5...-3....4...-1....2...-4....4...-4...-2...-1
%e .-3...-2....5...-4....3....4...-1....3...-3....1....4....2...-3....3....5....3
%e ..1...-5....1....5...-4....2....5....1...-2....4....3....5...-4....3...-3...-4
%e .-1...-3...-2...-3...-3....3...-2...-5...-1....5....3....3...-1....4...-5....4
%e ..4....1....1....4...-3...-4....1....4...-2...-4...-4....4....2....5...-2...-5
%K nonn
%O 1,1
%A _R. H. Hardin_ Apr 23 2011
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