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A186248 2n-th derivative of sec(x)^cos(x) at x=0. 1

%I

%S 1,1,-1,-44,-211,9136,118799,-9894884,-368001271,3949758496,

%T -1062959453221,-352302017500124,-54987975498787651,

%U -11177493084346370144,-3145848334837840227961,-988952736939184411495964,-349477151478120199840810351,-141758901275895434356815281984

%N 2n-th derivative of sec(x)^cos(x) at x=0.

%C sec(x) = 1/cos(x).

%C The sequence gives only 2n-th derivatives because (2n+1)-th derivatives are 0.

%t f[x_] := Sec[x]^Cos[x]; Table[Derivative[2*n] [f][0],{n,0,18}]

%Y Cf. A215677.

%K sign

%O 0,4

%A _Michel Lagneau_, Aug 18 2012

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Last modified August 3 08:53 EDT 2020. Contains 336197 sequences. (Running on oeis4.)