OFFSET
4,1
LINKS
R. H. Hardin, Table of n, a(n) for n = 4..500
Index entries for linear recurrences with constant coefficients, signature (3,-3,1,0,1,-1).
FORMULA
G.f.: -x^4*(-13+18*x-9*x^2-2*x^3-4*x^4+8*x^5) / ( (x-1)*(x^5-x^2+2*x-1) ). - R. J. Mathar, Jan 19 2011
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
R. H. Hardin, Aug 14 2009
STATUS
approved