A078041 Expansion of (1-x)/(1+x-x^2-2*x^3).

1, -2, 3, -3, 2, 1, -5, 10, -13, 13, -6, -7, 27, -46, 59, -51, 18, 49, -133, 218, -253, 205, -22, -279, 667, -990, 1099, -755, -126, 1569, -3205, 4522, -4589, 2701, 1754, -8231, 15387, -20110, 19035, -8371, -12814, 42513, -72069, 88954, -75997, 20813, 81098, -212279, 335003, -385086, 295531

Offset

0,2

Links

Table of n, a(n) for n=0..50.

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

Mathematica

CoefficientList[Series[(1-x)/(1+x-x^2-2x^3), {x, 0, 60}], x] (* or *) LinearRecurrence[{-1, 1, 2}, {1, -2, 3}, 60] (* Harvey P. Dale, Dec 03 2018 *)

Crossrefs

First differences of A077971.

Sequence in context: A205100 A156613 A285555 * A154840 A309995 A205102

Adjacent sequences: A078038 A078039 A078040 * A078042 A078043 A078044

Keyword

sign,easy

Author

N. J. A. Sloane, Nov 17 2002

Status

approved