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%I #28 Mar 30 2012 17:22:10
%S 0,0,1,3,18
%N Number of pairs of complementary l_1-graphs among all graphs on n nodes.
%D Deza, Michel and Huang, Tayuan, Complementary l_1-graphs and related combinatorial structures, in Combinatorics and Computer Science (Brest, 1995), 74-90, Lecture Notes in Comput. Sci., 1120, Springer, Berlin, 1996.
%D S. Shpectorov, Complementary l_1-graphs, Discrete Math., 192 (1998), 323-331.
%K nonn
%O 2,4
%A _N. J. A. Sloane_, Mar 04 2012
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