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A189544 Number of arrangements of n+1 nonzero numbers x(i) in -8..8 with the sum of trunc(x(i)/x(i+1)) equal to zero 1

%I

%S 112,660,7716,107464,1481908,21284040,311438060,4628970120,

%T 69656466100,1056054983348,16103559487552,246657108114908,

%U 3791540831400220,58459686887550560,903694350477338140,14001035809162949776

%N Number of arrangements of n+1 nonzero numbers x(i) in -8..8 with the sum of trunc(x(i)/x(i+1)) equal to zero

%C Column 8 of A189545

%H R. H. Hardin, <a href="/A189544/b189544.txt">Table of n, a(n) for n = 1..79</a>

%e Some solutions for n=5

%e .-8...-8...-5...-8...-7...-8...-8...-6...-5...-7...-7...-7...-8...-8...-7...-8

%e .-4...-4...-8...-7...-5...-7...-5...-7...-8...-8...-6...-6...-7...-7...-6...-5

%e ..7...-6...-6....3....2....1....2....1...-5...-3...-6....7...-2...-8....6...-7

%e .-8...-8...-7...-3....2....6....5...-3....2....3....2....5....5....3....3....2

%e ..7....3....6...-1....6....1...-4....7...-8....6....5....8....5....2....4...-6

%e .-5...-5....7....1...-7....8...-2....1...-6...-4....4...-4...-1....8...-2...-3

%K nonn

%O 1,1

%A _R. H. Hardin_ Apr 23 2011

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Last modified January 31 21:41 EST 2023. Contains 359981 sequences. (Running on oeis4.)