A012543 - OEIS

%I #6 Apr 13 2015 10:20:17

%S 1,0,12,240,15120,1355520,182229696,33914060544,8338432876800,

%T 2621544212398080,1025337444571630592,488344333262321119232,

%U 278250960368816815149056,186888075247900824522915840

%N sec(sinh(x)*arcsin(x))=1+12/4!*x^4+240/6!*x^6+15120/8!*x^8...

%t With[{nn=30},Take[CoefficientList[Series[Sec[Sinh[x]ArcSin[x]],{x,0,nn}],x] Range[0,nn]!,{1,-1,2}]] (* _Harvey P. Dale_, Apr 13 2015 *)

%K nonn

%O 0,3

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