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n-th derivative of cosh(x)^tan(x) at x=0.
2

%I #7 Aug 20 2012 17:12:14

%S 1,0,0,3,0,10,90,308,1680,13560,123480,788568,7646760,76432720,

%T 841320480,8436217208,103473901440,1320024546240,17546621595840,

%U 235942960528128,3481689023521920,54132188358133120,858287202343992960,14187715233218409728,246498724782915369600

%N n-th derivative of cosh(x)^tan(x) at x=0.

%t f[x_] := Cosh[x]^Tan[x]; Table[Derivative[ n] [f][0],{n,0,25}]

%Y Cf. A215585, A215681.

%K sign

%O 0,4

%A _Michel Lagneau_, Aug 16 2012