cp's OEIS Frontend

A225995 Number of pairs of orthogonal (-3,5) vectors of length 8*n.

%I A225995 #7 Sep 06 2013 03:02:51
%S A225995 1120,96608512,5476370673664,284705020569600000,
%T A225995 16898172507712428441600,995986456574626692094492672,
%U A225995 59516704487206110046425062572032,3603385124651416948013919241525788672
%N A225995 Number of pairs of orthogonal (-3,5) vectors of length 8*n.
%C A225995 Row 9 of A225987.
%H A225995 R. H. Hardin, <a href="/A225995/b225995.txt">Table of n, a(n) for n = 1..67</a>
%e A225995 Some solutions for n=1
%e A225995 .-3..5...-3..5...-3..5....5..5...-3..5...-3..5...-3.-3...-3..5...-3..5....5..5
%e A225995 ..5..5....5.-3....5..5...-3..5...-3..5....5..5...-3.-3....5..5....5.-3...-3..5
%e A225995 ..5.-3....5.-3....5.-3....5..5....5..5....5..5...-3..5...-3..5....5.-3....5.-3
%e A225995 ..5..5...-3.-3....5..5...-3..5....5.-3....5.-3....5.-3...-3..5....5..5....5..5
%e A225995 .-3..5...-3.-3....5..5....5..5....5..5....5.-3...-3.-3....5..5...-3..5....5.-3
%e A225995 ..5.-3...-3.-3....5.-3...-3..5....5.-3....5..5...-3.-3....5..5....5..5....5..5
%e A225995 ..5.-3...-3.-3...-3..5...-3..5...-3..5....5.-3....5.-3...-3..5...-3..5....5.-3
%e A225995 ..5..5...-3.-3...-3..5....5.-3....5..5...-3..5...-3.-3....5.-3....5..5....5.-3
%K A225995 nonn
%O A225995 1,1
%A A225995 _R. H. Hardin_, May 22 2013