Search: id:A000717
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%I A000717 M2599 N1027
%S A000717 1,1,1,3,6,24,148,1646,34040,1358852,106321628,16006173014,
%T A000717 4525920859198,2404130854745735,2426376196165902704
%N A000717 Number of graphs with n nodes and [ n(n-1)/4 ] edges.
%D A000717 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, 
               Academic Press, 1995 (includes this sequence).
%D A000717 N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 
               (includes this sequence).
%D A000717 M. L. Stein and P. R. Stein, Enumeration of Linear Graphs and Connected 
               Linear Graphs up to $p = 18$ Points. Report LA-3775, Los Alamos Scientific 
               Laboratory of the University of California, Los Alamos, NM, Oct 1967.
%D A000717 J. Riordan, An Introduction to Combinatorial Analysis, Wiley, 1958, p. 
               146.
%Y A000717 Cf. A008406.
%Y A000717 Sequence in context: A152761 A109155 A081072 this_sequence A076020 A018964 
               A018994
%Y A000717 Adjacent sequences: A000714 A000715 A000716 this_sequence A000718 A000719 
               A000720
%K A000717 nonn,nice
%O A000717 1,4
%A A000717 N. J. A. Sloane (njas(AT)research.att.com).

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