OFFSET
0,3
LINKS
G. C. Greubel, Table of n, a(n) for n = 0..237
MAPLE
seq(coeff(series(factorial(n)*cosh(sin(tan(x))), x, n+1), x, n), n=0..30, 2); # Muniru A Asiru, Jul 31 2018
MATHEMATICA
With[{nmax = 60}, CoefficientList[Series[Cosh[Sin[Tan[x]]], {x, 0, nmax}], x]*Range[0, nmax]!][[1 ;; -1 ;; 2]] (* G. C. Greubel, Jul 30 2018 *)
PROG
(PARI) x='x+O('x^60); v=Vec(serlaplace(cosh(sin(tan(x))))); vector(#v\2, n, v[2*n-1]) \\ G. C. Greubel, Jul 30 2018
CROSSREFS
KEYWORD
sign
AUTHOR
EXTENSIONS
Extended with signs by Olivier Gérard, Mar 15 1997
STATUS
approved