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%I A006612 M1654 #13 May 15 2017 18:19:33
%S A006612 0,0,0,0,2,6,21,75,411,2114,13529,108243
%N A006612 Number of n-node bipartite graphs not determined by their spectra.
%D A006612 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
%H A006612 C. Godsil and B. D. McKay, <a href="http://doi.org/10.1007/BFb0097370">Some computational results on the spectra of graphs</a>, pp. 73-92 of Combinatorial Mathematics IV (Adelaide 1975), Lect. Notes Math., 560 (1976).
%K A006612 nonn
%O A006612 1,5
%A A006612 _N. J. A. Sloane_.
%E A006612 a(10)-a(12) from _Sean A. Irvine_, May 15 2017

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