%I A000719 M1452 N0574
%S A000719 0,0,1,2,5,13,44,191,1229,13588,288597,12297299,1031342116,166123498733,
%T A000719 50668194387427,29104827043066808,31455591302381718651,
%U A000719 64032471448906164191208,245999896712611657677614268
%N A000719 Number of disconnected graphs with n nodes.
%D A000719 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, 
               Academic Press, 1995 (includes this sequence).
%D A000719 N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 
               (includes this sequence).
%D A000719 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 A000719 F. Harary, The number of linear, directed, rooted and connected graphs, 
               Trans. Amer. Math. Soc., 78 (1955), 445-463.
%D A000719 R. C. Read and R. J. Wilson, An Atlas of Graphs, Oxford, 1998.
%H A000719 David Wasserman, <a href="b000719.txt">Table of n, a(n) for n = 0..30</
               a>
%H A000719 Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/
               DisconnectedGraph.html">Link to a section of The World of Mathematics.</
               a>
%H A000719 Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/
               k-ConnectedGraph.html">Link to a section of The World of Mathematics.</
               a>
%H A000719 Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/
               k-Edge-ConnectedGraph.html">Link to a section of The World of Mathematics.</
               a>
%Y A000719 Equals (A000088) minus (A001349).
%Y A000719 Sequence in context: A114297 A119533 A066740 this_sequence A149875 A085632 
               A111563
%Y A000719 Adjacent sequences: A000716 A000717 A000718 this_sequence A000720 A000721 
               A000722
%K A000719 nonn,easy,nice
%O A000719 0,4
%A A000719 N. J. A. Sloane (njas(AT)research.att.com).
%E A000719 More terms from Christian Bower (bowerc(AT)usa.net). Further terms from 
               Vladeta Jovovic (vladeta(AT)eunet.rs), Apr 14 2000.