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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
OFFSET
0,2
FORMULA
Recurrence: a(n) = 3*a(n-1) + 2*a(n-2) + 2*a(n-3) for n >= 3 with a(0) = 1, a(1) = 2, and a(3) = 8. [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
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Nov 17 2002
STATUS
approved