OFFSET
0,3
LINKS
G. C. Greubel, Table of n, a(n) for n = 0..400
FORMULA
E.g.f.: exp(x*(1-x)/(1-2*x)).
a(n) ~ 2^(n-1)*exp(1/8+sqrt(n)-n)*n^(n-1/4). - Vaclav Kotesovec, Jun 27 2013
MATHEMATICA
With[{nn=20}, CoefficientList[Series[Exp[x (1-x)/(1-2x)], {x, 0, nn}], x ]Range[0, nn]!] (* Harvey P. Dale, Mar 31 2013 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Jan 24 2001
STATUS
approved