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A013261 Expansion of e.g.f. arctan(log(x+1) - sinh(x)). 0
0, 0, -1, 1, -6, 23, -90, 509, -1960, 7251, 20160, -1028821, 16750008, -249844519, 3354647296, -42644099135, 506129014560, -4945670890617, 23557830350976, 694520543221487, -32533456838195320, 956551460942273757 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,5
LINKS
EXAMPLE
-(1/2!)*x^2 + (1/3!)*x^3 - (6/4!)*x^4 + (23/5!)*x^5 - ...
PROG
(PARI) x = 'x + O('x^30); concat([0, 0], Vec(serlaplace(atan(log(x+1) - sinh(x))))) \\ Michel Marcus, Aug 03 2018
CROSSREFS
Sequence in context: A054491 A282710 A295132 * A013265 A228703 A344815
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 30 17:43 EDT 2024. Contains 372971 sequences. (Running on oeis4.)