OFFSET
0,2
COMMENTS
Hankel transform of A157125.
LINKS
Index entries for linear recurrences with constant coefficients, signature (0,0,-4,0,0,-1).
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
KEYWORD
easy,sign
AUTHOR
Paul Barry, Feb 23 2009
STATUS
approved