A012380 - OEIS

%I #6 Apr 16 2023 16:48:31

%S 2,12,310,15960,1275178,144435940,22125155806,4434275544496,

%T 1132379391991122,360443126615627452,140377052282997200262,

%U 65840588544634920144392,36684663022679611837425786

%N sinh(tan(x)*arcsin(x))=2/2!*x^2+12/4!*x^4+310/6!*x^6+15960/8!*x^8...

%t With[{nn=30},Take[CoefficientList[Series[Sinh[Tan[x]ArcSin[x]],{x,0,nn}],x] Range[0,nn]!,{3,-1,2}]] (* _Harvey P. Dale_, Apr 16 2023 *)

%K nonn

%O 0,1

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