%I A007717
%S A007717 2,7,23,79,274,1003,3763,14723,59663,250738,1090608,4905430,22777420,109040012,
               537401702
%N A007717 Number of symmetric polynomial functions of degree n of a symmetric matrix 
               (of indefinitely large size) under joint row and column permutations. 
               Also number of multigraphs with loops on infinite set of nodes having 
               n edges.
%D A007717 Huaien Li and David C. Torney, Enumerations of Multigraphs, 2002.
%Y A007717 Cf. A050535, A002620, A050531, A050532.
%Y A007717 Sequence in context: A091702 A068593 A112657 this_sequence A130567 A143629 
               A119371
%Y A007717 Adjacent sequences: A007714 A007715 A007716 this_sequence A007718 A007719 
               A007720
%K A007717 easy,nonn
%O A007717 1,1
%A A007717 C. L. Mallows (colinm(AT)research.avayalabs.com)
%E A007717 More terms from Vladeta Jovovic (vladeta(AT)eunet.rs), Jan 26 2000