OFFSET
0,1
REFERENCES
Ch. Eslahchi, S. Alikhani, M. H. Akhbari, Hosoya polynomial of an infinite family of dendrimer nanostar, Iranian J. Math. Chem. 2 (2011) 71-79.
LINKS
Index entries for linear recurrences with constant coefficients, signature (13,-64,148,-160,64).
FORMULA
a(n) = 28+2^n*(448*n+1554)+4^n*(784*n-1540). Theorem 5 of the Eslahchi et al. paper contains a less explicit formula for the Wiener index.
G.f.: 14*(3+33*x-10*x^2-8*x^3)/((1-x)*(1-2*x)^2*(1-4*x)^2). - Bruno Berselli, Dec 30 2012
MAPLE
a := proc (n) options operator, arrow: 28+2^n*(448*n+1554)+4^n*(784*n-1540) end proc: seq(a(n), n = 0 .. 20);
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Emeric Deutsch, Dec 30 2012
EXTENSIONS
Offset changed from 1 to 0 by Bruno Berselli, Dec 30 2012
STATUS
approved