A077923 Expansion of (1-x)^(-1)/(1+2*x-x^2+2*x^3).

1, -1, 4, -10, 27, -71, 190, -504, 1341, -3565, 9480, -25206, 67023, -178211, 473858, -1259972, 3350225, -8908137, 23686444, -62981474, 167465667, -445285695, 1184000006, -3148217040, 8371005477, -22258228005, 59183895568, -157368030094, 418436411767, -1112608644763

Offset

0,3

Links

Table of n, a(n) for n=0..29.

Index entries for linear recurrences with constant coefficients, signature (-1,3,-3,2).

Formula

a(n) = 2 a(n-4) - 3 a(n-3) + 3 a(n-2)- a(n-1) - N-E. Fahssi, Mar 29 2008

Crossrefs

Sequence in context: A121494 A122744 A192879 * A183325 A052982 A108672

Adjacent sequences: A077920 A077921 A077922 * A077924 A077925 A077926

Keyword

sign

Author

N. J. A. Sloane, Nov 17 2002

Status

approved