OFFSET
0,2
LINKS
Stefano Spezia, Table of n, a(n) for n = 0..2300
Index entries for linear recurrences with constant coefficients, signature (6,-13,13,-6,1).
FORMULA
G.f.: 1/((1 - 3*x + x^2)*(1 - x)^3). [Maksym Voznyy (voznyy(AT)mail.ru), Aug 14 2009]
MATHEMATICA
CoefficientList[Series[1/((1-3*x+x^2)*(1-x)^3), {x, 0, 28}], x] (* Stefano Spezia, Apr 24 2023 *)
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Clark Kimberling, May 02 2000
EXTENSIONS
Definition corrected by R. J. Mathar, Sep 16 2009
STATUS
approved