cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A226004 Number of pairs of orthogonal (-6,7) vectors of length 13*n.

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%I A226004 #8 Sep 06 2013 02:02:21
%S A226004 164736,73201966489600,2521184924824165416960,
%T A226004 178483804896209887617477509120,
%U A226004 10141070492754733571346654771749584896,628258815066107432786230672181689099642470400
%N A226004 Number of pairs of orthogonal (-6,7) vectors of length 13*n.
%C A226004 Row 18 of A225987.
%H A226004 R. H. Hardin, <a href="/A226004/b226004.txt">Table of n, a(n) for n = 1..31</a>
%e A226004 Some solutions for n=1
%e A226004 .-6..7...-6.-6...-6..7...-6.-6...-6..7...-6.-6...-6..7...-6..7...-6..7...-6.-6
%e A226004 ..7.-6...-6..7...-6..7...-6.-6...-6..7...-6.-6...-6..7...-6.-6...-6..7...-6..7
%e A226004 ..7..7....7.-6....7..7...-6..7...-6..7...-6.-6...-6.-6....7.-6....7..7...-6.-6
%e A226004 ..7..7...-6.-6....7..7....7.-6....7..7...-6..7...-6.-6...-6.-6....7..7...-6.-6
%e A226004 .-6..7...-6.-6....7..7...-6..7....7.-6...-6.-6...-6.-6...-6..7....7.-6...-6..7
%e A226004 ..7..7...-6..7....7.-6....7.-6....7..7...-6.-6...-6..7...-6..7....7..7....7.-6
%e A226004 ..7..7...-6..7....7..7...-6.-6...-6..7...-6..7...-6.-6...-6.-6....7..7...-6.-6
%e A226004 .-6..7...-6.-6...-6..7...-6.-6....7.-6....7.-6....7.-6...-6..7....7..7...-6.-6
%e A226004 ..7..7...-6.-6...-6..7...-6.-6....7..7....7.-6...-6.-6...-6..7...-6..7...-6.-6
%e A226004 .-6..7...-6..7....7.-6...-6.-6....7..7...-6.-6....7.-6...-6.-6...-6..7....7.-6
%e A226004 ..7.-6...-6.-6....7..7....7.-6....7..7...-6..7...-6.-6...-6.-6....7.-6...-6.-6
%e A226004 ..7..7...-6.-6...-6..7...-6.-6....7.-6...-6.-6...-6..7...-6.-6...-6..7...-6..7
%e A226004 ..7.-6....7.-6....7..7....7.-6....7..7...-6..7...-6.-6...-6.-6....7..7....7.-6
%K A226004 nonn
%O A226004 1,1
%A A226004 _R. H. Hardin_, May 22 2013