A078051 - OEIS

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A078051

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

1, -2, 0, 3, -1, -5, 4, 7, -10, -8, 21, 5, -39, 8, 65, -42, -96, 115, 119, -253, -100, 487, -34, -840, 421, 1293, -1295, -1712, 3009, 1710, -6016, -413, 10735, -3893, -17164, 14215, 24006, -35272, -26955, 73493, 15689, -135720, 30849, 224902, -150880, -329773, 406631, 403795, -887284, -326937

(list; graph; refs; listen; history; text; internal format)

OFFSET

0,2

LINKS

Table of n, a(n) for n=0..49.

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

MATHEMATICA

LinearRecurrence[{-1, -2, -1}, {1, -2, 0}, 50] (* Harvey P. Dale, Aug 18 2014 *)

PROG

(PARI) Vec((1-x)/(1+x+2*x^2+x^3) + O(x^50)) \\ Jinyuan Wang, Apr 07 2020

CROSSREFS

First differences of A077979.