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A077900
Expansion of (1-x)^(-1)/(1+x-2*x^2+2*x^3).
0
1, 0, 3, -4, 11, -24, 55, -124, 283, -640, 1455, -3300, 7491, -17000, 38583, -87564, 198731, -451024, 1023615, -2323124, 5272403, -11965880, 27156935, -61633500, 139879131, -317460000, 720485263, -1635163524, 3711054051, -8422351624, 19114786775, -43381598124, 98455874923
OFFSET
0,3
FORMULA
A077970(n) = a(n)-a(n-1). - R. J. Mathar, Feb 28 2019
CROSSREFS
Sequence in context: A131481 A001072 A292623 * A208176 A198443 A041231
KEYWORD
sign,easy
AUTHOR
N. J. A. Sloane, Nov 17 2002
STATUS
approved