A122682 - OEIS

%I #13 Mar 03 2015 00:56:30

%S 0,1,8,38,164,609,2256,7815,26892,90146,299334,980076,3186204,

%T 10267007,32890404,104740387,331986416,1047635608,3293659532,

%U 10319401978,32234241580,100410827583,312006988094,967297548259,2992646045220

%N Total Wiener index of (rooted?) trees on n nodes (see Wagner for precise definition).

%C C program, see the first Bomfim link, around the function Gen() of Gang Li & Frank Ruskey.

%D S. Wagner, Graph-theoretical enumeration and digital expansions: an analytic approach, Dissertation, Fakult. f. Tech. Math. u. Tech. Physik, Tech. Univ. Graz, Austria, Feb., 2006.

%H W. Bomfim, <a href="https://oeis.org/w/images/3/33/Rootedwiener.txt">C program</a>

%H Stephan Wagner, <a href="http://www.cs.sun.ac.za/~swagner/avwiener.pdf">On the average Wiener index of degree-restricted trees</a>

%Y Cf. A000081.

%K nonn

%O 1,3

%A _N. J. A. Sloane_, Sep 23 2006

%E a(11)-a(25) from _Washington Bomfim_, Feb 23 2011