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%I #8 Sep 06 2013 02:02:51
%S 22176,335386827776,849096326082723840,3382498893919837995663360,
%T 12525301776918401256778352295936,
%U 47806396948285999641998907781626724352,186570872745316137212860850541663493543690240
%N Number of pairs of orthogonal (-5,6) vectors of length 11*n.
%C Row 12 of A225987.
%H R. H. Hardin, <a href="/A225998/b225998.txt">Table of n, a(n) for n = 1..41</a>
%e Some solutions for n=1
%e .-5..6...-5..6....6..6...-5..6....6..6...-5..6....6..6...-5..6...-5..6...-5.-5
%e ..6.-5....6..6...-5..6....6..6...-5..6....6..6....6..6...-5..6...-5..6...-5.-5
%e ..6..6....6..6....6.-5....6..6....6..6....6..6...-5..6...-5..6....6..6...-5.-5
%e ..6.-5....6.-5....6..6....6..6...-5..6....6.-5....6.-5....6..6....6..6...-5..6
%e ..6.-5....6.-5....6.-5....6.-5....6.-5....6..6....6..6....6.-5....6.-5...-5.-5
%e ..6..6....6..6....6.-5....6.-5....6.-5....6..6....6.-5....6..6...-5..6...-5.-5
%e ..6..6....6..6....6..6....6.-5....6.-5....6.-5....6.-5....6.-5....6.-5...-5.-5
%e ..6..6...-5..6....6..6....6..6....6..6...-5..6....6..6....6..6....6..6...-5..6
%e ..6..6...-5..6....6.-5...-5..6....6..6...-5..6...-5..6....6..6....6..6....6.-5
%e .-5..6...-5..6....6.-5...-5..6....6.-5....6..6....6..6...-5..6....6..6...-5..6
%e ..6.-5....6..6....6..6....6..6....6..6...-5..6...-5..6....6..6....6.-5....6.-5
%K nonn
%O 1,1
%A _R. H. Hardin_, May 22 2013
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