OFFSET
0,2
COMMENTS
For n>1, a(n-1) is the number of generalized compositions of n when there are i^3 different types of i, (i=1,2,...). [Milan Janjic, Sep 24 2010]
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 0..1000
Index entries for linear recurrences with constant coefficients, signature (5, -2, 5, -1).
MATHEMATICA
CoefficientList[Series[(1 + 4*x + x^2)/((1 + x^2)*(1 -5 *x + x^2)), {x, 0, 40}], x] (* Vincenzo Librandi, Dec 14 2012 *)
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
R. J. Mathar, Sep 11 2008
STATUS
approved