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A013273 Expansion of e.g.f. arctan(log(x+1) - arcsinh(x)). 0
0, 0, -1, 3, -6, 15, -90, 315, 2520, -42525, 332640, -3170475, 43659000, -387161775, -469188720, 61992505575, -1117425909600, 23419417796775, -552570387969600, 9277455340778625, -88132216543371000 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,4

LINKS

Table of n, a(n) for n=0..20.

EXAMPLE

-(1/2!)*x^2 + (3/3!)*x^3 - (6/4!)*x^4 + (15/5!)*x^5 - ...

PROG

(PARI) x = 'x + O('x^30); concat([0, 0], Vec(serlaplace(atan(log(x+1) - asinh(x))))) \\ Michel Marcus, Aug 03 2018

CROSSREFS

Sequence in context: A208662 A102936 A009192 * A013277 A190187 A144549

Adjacent sequences:  A013270 A013271 A013272 * A013274 A013275 A013276

KEYWORD

sign

AUTHOR

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

EXTENSIONS

a(0)=a(1)=0 inserted and title improved by Sean A. Irvine, Aug 02 2018

STATUS

approved

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Last modified May 21 15:32 EDT 2019. Contains 323444 sequences. (Running on oeis4.)