OFFSET
0,2
LINKS
Alois P. Heinz, Table of n, a(n) for n = 0..2000 (first 500 terms from R. H. Hardin)
Index entries for linear recurrences with constant coefficients, signature (2,-1,0,1,-1).
FORMULA
G.f.: (x+1)*(x^2-x+1)*(x^3+x^2+1)/((x-1)*(x^4+x-1)). - R. J. Mathar, Jan 19 2011
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
R. H. Hardin, Aug 14 2009
STATUS
approved