OFFSET
1,3
COMMENTS
C program, see the first Bomfim link, around the function Gen() of Gang Li & Frank Ruskey. - Washington Bomfim, Feb 23 2011
LINKS
W. Bomfim, C program
Stephan Wagner, Graph-theoretical enumeration and digital expansions: an analytic approach, Dissertation, Fakult. f. Tech. Math. u. Tech. Physik, Tech. Univ. Graz, Austria, Feb. 2006, page 31
Stephan Wagner, On the average Wiener index of degree-restricted trees, Australas. J. Combinat. 37 (2007) 187, Table 2
EXAMPLE
a(4)=19; indeed, there are 2 trees on 4 vertices: the path abcd with Wiener index 1+1+1+2+2+3=10 and the star tree on 4 vertices with Wiener index 1+1+1+2+2+2 = 9. - Emeric Deutsch, Feb 20 2016
CROSSREFS
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Sep 23 2006
EXTENSIONS
a(11)-a(27) from Washington Bomfim, Feb 23 2011
Name edited by Emeric Deutsch, Feb 20 2016
STATUS
approved