A077944 Expansion of 1/(1-2*x+2*x^2+x^3).

1, 2, 2, -1, -8, -16, -15, 10, 66, 127, 112, -96, -543, -1006, -830, 895, 4456, 7952, 6097, -8166, -36478, -62721, -44320, 73280, 297921, 493602, 318082, -648961, -2427688, -3875536, -2246735, 5685290, 19739586, 30355327, 15546192, -49357856, -160163423, -237157326, -104629950

Offset

0,2

Links

Table of n, a(n) for n=0..38.

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

Prog

(PARI) Vec(1/(1-2*x+2*x^2+x^3)+O(x^99)) \\ Charles R Greathouse IV, Sep 26 2012

Crossrefs

Sequence in context: A348724 A238182 A117260 * A077992 A126586 A128463

Adjacent sequences: A077941 A077942 A077943 * A077945 A077946 A077947

Keyword

sign,easy

Author

N. J. A. Sloane, Nov 17 2002

Status

approved