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 (2,0,0,-2,1).
FORMULA
G.f.: (x^6+x^5-1)/((x-1)*(x^4-x^3-x^2-x+1)). - R. J. Mathar, Nov 28 2011
MATHEMATICA
LinearRecurrence[{2, 0, 0, -2, 1}, {1, 2, 4, 8, 14, 24, 41}, 50] (* G. C. Greubel, Sep 18 2017; amended for offset 0 by Georg Fischer, Apr 02 2019 *)
PROG
(PARI) x='x+O('x^50); Vec((1-x^5-x^6)/((1-x)*(x^4-x^3-x^2-x+1))) \\ G. C. Greubel, Sep 18 2017; amended for offset 0 by Georg Fischer, Apr 02 2019
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
R. H. Hardin, Aug 14 2009
EXTENSIONS
Edited by Alois P. Heinz, Oct 11 2017
STATUS
approved