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A077839 Expansion of (1-x)/(1-3*x-2*x^2-2*x^3). 0
1, 2, 8, 30, 110, 406, 1498, 5526, 20386, 75206, 277442, 1023510, 3775826, 13929382, 51386818, 189570870, 699345010, 2579950406, 9517682978, 35111639766, 129530186066, 477849203686, 1762831262722, 6503252567670, 23991118635826, 88505523568262 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..25.

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

FORMULA

a(0)=1, a(1)=2, a(3)=8, a(n)=3a(n-1)+2a(n-2)+2a(n-3) [From Harvey P. Dale, Apr 29 2011]

MATHEMATICA

CoefficientList[Series[(1-x)/(1-3x-2x^2-2x^3), {x, 0, 40}], x] (* or *) LinearRecurrence[{3, 2, 2}, {1, 2, 8}, 41]  (* Harvey P. Dale, Apr 29 2011 *)

CROSSREFS

Sequence in context: A199923 A230269 A278023 * A052530 A274798 A281949

Adjacent sequences:  A077836 A077837 A077838 * A077840 A077841 A077842

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Nov 17 2002

STATUS

approved

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Last modified April 22 08:25 EDT 2019. Contains 322329 sequences. (Running on oeis4.)