A077861 Expansion of (1-x)^(-1)/(1-2*x+2*x^2+x^3).

1, 3, 5, 4, -4, -20, -35, -25, 41, 168, 280, 184, -359, -1365, -2195, -1300, 3156, 11108, 17205, 9039, -27439, -90160, -134480, -61200, 236721, 730323, 1048405, 399444, -2028244, -5903780, -8150515, -2465225, 17274361, 47629688, 63175880, 13818024, -146345399, -383502725

Offset

0,2

Links

Table of n, a(n) for n=0..37.

Index entries for linear recurrences with constant coefficients, signature (3,-4,1,1)

Mathematica

CoefficientList[Series[(1-x)^(-1)/(1-2x+2x^2+x^3), {x, 0, 40}], x] (* or *) LinearRecurrence[{3, -4, 1, 1}, {1, 3, 5, 4}, 40] (* Harvey P. Dale, Aug 26 2013 *)

Crossrefs

Cf. A077944 (first differences).

Sequence in context: A130532 A019707 A197825 * A272647 A076308 A049528

Adjacent sequences: A077858 A077859 A077860 * A077862 A077863 A077864

Keyword

sign

Author

N. J. A. Sloane, Nov 17 2002

Status

approved