OFFSET
0,2
LINKS
G. C. Greubel, Table of n, a(n) for n = 0..239
MATHEMATICA
With[{nmax = 50}, CoefficientList[Series[Tan[x]*Sinh[Tan[x]], {x, 0, nmax} ], x]*Range[0, nmax]!][[1 ;; ;; 2]] (* G. C. Greubel, Feb 12 2018 *)
PROG
(PARI) x='x+O('x^50); v=Vec(serlaplace(tan(x)*sinh(tan(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