login

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

A077895
Expansion of (1-x)^(-1)/(1+2*x^2+2*x^3).
0
1, 1, -1, -3, 1, 9, 5, -19, -27, 29, 93, -3, -243, -179, 493, 845, -627, -2675, -435, 6605, 6221, -12339, -25651, 12237, 75981, 26829, -176435, -205619, 299213, 764109, -187187, -2126643, -1153843, 4627661, 6560973, -6947635, -22377267, 773325, 58649805, 43207885, -118846259, -203715379
OFFSET
0,4
MATHEMATICA
LinearRecurrence[{1, -2, 0, 2}, {1, 1, -1, -3}, 50] (* Harvey P. Dale, Mar 06 2023 *)
CROSSREFS
Sequence in context: A140714 A112932 A337680 * A105539 A132819 A264364
KEYWORD
sign,easy
AUTHOR
N. J. A. Sloane, Nov 17 2002
STATUS
approved