A012581 - OEIS

%I #7 Feb 04 2015 14:31:49

%S 1,0,0,0,12,-60,210,-1260,14448,-139104,1131720,-11676720,163234632,

%T -2192512608,27259115520,-393931268640,6898028418048,-119527801113984,

%U 1985315996055744,-36767841202329984

%N cosh(arcsinh(x)*log(x+1))=1+12/4!*x^4-60/5!*x^5+210/6!*x^6...

%H Vaclav Kotesovec, <a href="/A012581/b012581.txt">Table of n, a(n) for n = 0..446</a>

%t CoefficientList[Series[Cosh[ArcSinh[x]*Log[1 + x]], {x, 0, 20}], x] * Range[0, 20]! (* _Vaclav Kotesovec_, Feb 04 2015 *)

%K sign

%O 0,5

%A Patrick Demichel (patrick.demichel(AT)hp.com)