OFFSET
0,4
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 0..200
FORMULA
a(n) ~ (-1)^n * n! / (2 * Gamma(exp(-1)) * n^(1 - exp(-1))). - Vaclav Kotesovec, Jul 28 2018
MATHEMATICA
With[{nn=30}, CoefficientList[Series[Cosh[Log[1+x]*Exp[x]], {x, 0, nn}], x]Range[0, nn]!] (* Harvey P. Dale, Nov 29 2011 *)
PROG
(PARI) x='x+O('x^30); Vec(serlaplace(cosh(log(1+x)*exp(x)))) \\ G. C. Greubel, Jul 28 2018
(Magma) m:=30; R<x>:=PowerSeriesRing(Rationals(), m); b:=Coefficients(R!(Cosh(Log(1+x)*Exp(x)))); [Factorial(n-1)*b[n]: n in [1..m]]; // G. C. Greubel, Jul 28 2018
CROSSREFS
KEYWORD
sign,easy
AUTHOR
EXTENSIONS
Extended with signs by Olivier Gérard, Mar 15 1997
STATUS
approved