OFFSET
0,2
LINKS
FORMULA
MATHEMATICA
CoefficientList[Series[(1-x)/((1-2x)(1-4x+x^2)), {x, 0, 30}], x] (* Harvey P. Dale, Oct 05 2019 *)
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Philippe Deléham, Mar 16 2013
STATUS
approved