OFFSET
0,2
MATHEMATICA
CoefficientList[Series[(1+x^4((1-Sqrt[1-4x])/(2x))^4)((1-Sqrt[1-4x])/ (2x))^2, {x, 0, 25}], x] (* Harvey P. Dale, Jul 26 2011 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Jun 06 2002
STATUS
approved