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A215586 n-th derivative of cos(x)^tan(x) at x=0. 2
1, 0, 0, -3, 0, -30, 90, -588, 5040, -26520, 325080, -2158728, 27731880, -249259920, 3181258080, -36821629848, 482278043520, -6704476956480, 93675256079040, -1479108131816448, 22566722722104960, -390679249452835200, 6559255213047250560, -122197022127873558528 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,4

LINKS

Table of n, a(n) for n=0..23.

FORMULA

E.g.f.: cos(x)^tan(x).

MAPLE

a:= n-> n!* coeff(series(cos(x)^tan(x), x, n+1), x, n):

seq (a(n), n=0..25);

MATHEMATICA

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

CROSSREFS

Cf. A215588, A215680.

Sequence in context: A296436 A215588 A215683 * A215680 A007415 A145222

Adjacent sequences:  A215583 A215584 A215585 * A215587 A215588 A215589

KEYWORD

sign

AUTHOR

Michel Lagneau, Aug 16 2012

STATUS

approved

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Last modified August 11 15:10 EDT 2022. Contains 356066 sequences. (Running on oeis4.)