%I A050535
%S A050535 1,1,3,8,23,66,212,686,2389,8682,33160,132277,550835,2384411,10709827
%N A050535 Number of multigraphs on infinite set of nodes with n edges.
%D A050535 F. Harary and E. M. Palmer, Graphical Enumeration, Academic Press, NY, 
               1973, p. 88, Eq. (4.1.18).
%H A050535 <a href="a50535.pdf">Number of m-rowed binary matrices with all row sums 
               equal to n, up to row and column permutation</a>
%Y A050535 Cf. A001399, A003082, A014395-A014398.
%Y A050535 Cf. A058389, A050913, A058783, A058390, A058784, A058785, A058391, A058392, 
               A001501, A058528
%Y A050535 Sequence in context: A147704 A116410 A106606 this_sequence A025578 A038151 
               A057198
%Y A050535 Adjacent sequences: A050532 A050533 A050534 this_sequence A050536 A050537 
               A050538
%K A050535 more,nonn
%O A050535 0,3
%A A050535 Vladeta Jovovic (vladeta(AT)eunet.rs), Dec 29 1999