OFFSET
0,2
LINKS
FORMULA
MATHEMATICA
CoefficientList[Series[(1-2x^2)/(1+x)^2, {x, 0, 60}], x] (* or *) LinearRecurrence[{-2, -1}, {1, -2, 1}, 60] (* Harvey P. Dale, Aug 25 2023 *)
PROG
(PARI) Vec((1 - 2*x^2)/(1 + x)^2 + O(x^80)) \\ Michel Marcus, Oct 11 2014
CROSSREFS
KEYWORD
sign,easy,less
AUTHOR
Wolfdieter Lang, Oct 05 2014
STATUS
approved