OFFSET
0,6
LINKS
Philippe Flajolet, Éric Fusy, Xavier Gourdon, Daniel Panario and Nicolas Pouyanne, A Hybrid of Darboux's Method and Singularity Analysis in Combinatorial Asymptotics, arXiv:math.CO/0606370. [See A_6(z).]
MATHEMATICA
max = 23; f[x_] := ((1+x)/(1-x))^(1/3)*((1 + x + x^2)/(1 - x + x^2))^(1/6); CoefficientList[ Series[f[x], {x, 0, max}], x]*Range[0, max]! (* Jean-François Alcover, Oct 05 2011 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Nov 09 2006
STATUS
approved