OFFSET
0,6
LINKS
G. C. Greubel, Table of n, a(n) for n = 0..449
MATHEMATICA
With[{m=30}, CoefficientList[Series[Log[1+x]/Cosh[Sinh[x]], {x, 0, m}], x]*Range[0, m]!] (* modified by G. C. Greubel, Sep 08 2023 *)
PROG
(Magma)
R<x>:=PowerSeriesRing(Rationals(), 30);
[0] cat Coefficients(R!(Laplace( Log(1+x)/Cosh(Sinh(x)) ))); // G. C. Greubel, Sep 08 2023
(SageMath)
def A009432_list(prec):
P.<x> = PowerSeriesRing(QQ, prec)
return P( log(1+x)/cosh(sinh(x)) ).egf_to_ogf().list()
A009432_list(31) # G. C. Greubel, Sep 08 2023
CROSSREFS
KEYWORD
sign,easy
AUTHOR
EXTENSIONS
Extended with signs by Olivier Gérard, Mar 15 1997
STATUS
approved