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 (3,-3,2,-2,1).
FORMULA
G.f.: (x^6+x^4-x^2+x-1)/((x^3+x-1)*(x-1)^2). - R. J. Mathar, Jan 19 2011
MATHEMATICA
LinearRecurrence[{3, -3, 2, -2, 1}, {1, 2, 4, 8, 13, 20, 30}, 50] (* Harvey P. Dale, Aug 14 2023 *)
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
R. H. Hardin, Aug 14 2009
EXTENSIONS
Edited by Alois P. Heinz, Oct 27 2017
STATUS
approved