OFFSET
0,2
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 0..1000
Peter Lawrence et al., sequence challenge and follow-up messages on the SeqFan list, Nov 21 2011
Index entries for linear recurrences with constant coefficients, signature (2,5,-9).
FORMULA
a(n) = 2*a(n-1) +5*a(n-2) -9*a(n-3) for n>2. - Vincenzo Librandi, Jun 30 2014
MATHEMATICA
LinearRecurrence[{2, 5, -9}, {1, 2, 7}, 40] (* Harvey P. Dale, Jun 29 2014 *)
CoefficientList[Series[(1 - 2 x^2)/(1 - 2 x - 5 x^2 + 9 x^3), {x, 0, 40}], x] (* Vincenzo Librandi, Jun 30 2014 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Nov 23 2011
STATUS
approved