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A157126
Expansion of (1-2x-3x^2+x^3-x^5)/(1+4x^3+x^6).
1
1, -2, -3, -3, 8, 11, 11, -30, -41, -41, 112, 153, 153, -418, -571, -571, 1560, 2131, 2131, -5822, -7953, -7953, 21728, 29681, 29681, -81090, -110771, -110771, 302632, 413403, 413403, -1129438, -1542841, -1542841, 4215120, 5757961, 5757961
OFFSET
0,2
COMMENTS
Hankel transform of A157125.
FORMULA
a(0)=1, a(1)=-2, a(2)=-3, a(3)=-3, a(4)=8, a(5)=11, a(n)=-4*a(n-3)-a(n-6). - Harvey P. Dale, Jan 16 2013
MATHEMATICA
CoefficientList[Series[(1-2x-3x^2+x^3-x^5)/(1+4x^3+x^6), {x, 0, 40}], x] (* or *) LinearRecurrence[{0, 0, -4, 0, 0, -1}, {1, -2, -3, -3, 8, 11}, 40] (* Harvey P. Dale, Jan 16 2013 *)
CROSSREFS
Cf. A048788.
Sequence in context: A261469 A292498 A108692 * A357655 A297703 A263464
KEYWORD
easy,sign
AUTHOR
Paul Barry, Feb 23 2009
STATUS
approved