A137426 a(n)=-a(n-1)+2a(n-3).

0, 1, -3, 3, -1, -5, 11, -13, 3, 19, -45, 51, -13, -77, 179, -205, 51, 307, -717, 819, -205, -1229, 2867, -3277, 819, 4915, -11469, 13107, -3277, -19661, 45875, -52429, 13107, 78643, -183501, 209715, -52429, -314573, 734003, -838861, 209715, 1258291

Offset: 0

Author

Paul Curtz, Apr 17 2008

Keywords

• sign

Links

• Index entries for linear recurrences with constant coefficients, signature (-1, 0, 2).

Programs

Mathematica

LinearRecurrence[{-1,0,2},{0,1,-3},80] (* Harvey P. Dale, Dec 03 2012 *)

Formula

G.f.: (2*x^2-x)/(2*x^3-x-1). - Harvey P. Dale, Dec 03 2012

Extensions

More terms from Harvey P. Dale, Dec 03 2012