OFFSET
3,2
LINKS
Alois P. Heinz, Table of n, a(n) for n = 3..1000
Index entries for linear recurrences with constant coefficients, signature (6, -9, -8, 27, -10, -10, 4).
FORMULA
G.f.: -x^3*(x^4+2*x^2-3*x+1)/((2*x-1)*(x^2-3*x+1)*(2*x^2-1)*(x^2+x-1)).
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Alois P. Heinz, Sep 05 2017
STATUS
approved