OFFSET
0,2
LINKS
Harvey P. Dale, Table of n, a(n) for n = 0..1000
MATHEMATICA
With[{c=(1-Sqrt[1-4x])/(2x)}, CoefficientList[Series[(1+x^4 c^4)c^4, {x, 0, 30}], x]] (* Harvey P. Dale, Jul 19 2016 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Jun 06 2002
STATUS
approved