OFFSET
0,2
LINKS
G. C. Greubel, Table of n, a(n) for n = 0..242
FORMULA
a(n) ~ (2*n)! * (exp(1) - exp(-1)) * (2/Pi)^(2*n+1). - Vaclav Kotesovec, Jan 23 2015
MATHEMATICA
nn = 20; Table[(CoefficientList[Series[Sinh[Sin[x]]*Tan[x], {x, 0, 2*nn}], x] * Range[0, 2*nn]!)[[n]], {n, 1, 2*nn+1, 2}] (* Vaclav Kotesovec, Jan 23 2015 *)
PROG
(PARI) x='x+O('x^50); v=Vec(serlaplace(tan(x)*sinh(sin(x)))); concat([0], vector(#v\2, n, v[2*n-1])) \\ G. C. Greubel, Feb 12 2018
CROSSREFS
KEYWORD
nonn
AUTHOR
EXTENSIONS
Extended and signs tested by Olivier Gérard, Mar 15 1997
STATUS
approved