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A077904
Expansion of (1-x)^(-1)/(1+x-2*x^3).
0
1, 0, 1, 2, -1, 4, 1, -2, 11, -8, 5, 18, -33, 44, -7, -58, 147, -160, 45, 250, -569, 660, -159, -978, 2299, -2616, 661, 3938, -9169, 10492, -2615, -15722, 36707, -41936, 10493, 62922, -146793, 167780, -41935, -251650, 587211, -671080, 167781, 1006642, -2348801, 2684364, -671079, -4026522
OFFSET
0,4
FORMULA
G.f.: G(0)/(2*(1-x^2)*(1-x)), where G(k)= 1 + 1/(1 - x*(k+1)/(x*(k+2) - 1/G(k+1))); (continued fraction). - Sergei N. Gladkovskii, May 25 2013
MATHEMATICA
LinearRecurrence[{0, 1, 2, -2}, {1, 0, 1, 2}, 60] (* Harvey P. Dale, Oct 09 2020 *)
CROSSREFS
Sequence in context: A268669 A030652 A224065 * A088964 A326721 A243792
KEYWORD
sign,easy
AUTHOR
N. J. A. Sloane, Nov 17 2002
STATUS
approved