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A013228 Expansion of e.g.f. arcsinh(log(x+1) - arcsin(x)). 0
0, 0, -1, 1, -6, 15, -105, 390, -3500, 15785, -188685, 946350, -15864750, 90057825, -2127610485, 15254857800, -444774915000, 4213468013625, -130378398500025, 1538133793366950, -48054409884965250 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,5

LINKS

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

EXAMPLE

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

MATHEMATICA

With[{nn=20}, CoefficientList[Series[ArcSinh[Log[x+1]-ArcSin[x]], {x, 0, nn}], x] Range[0, nn]!] (* Harvey P. Dale, Sep 26 2021 *)

CROSSREFS

Sequence in context: A029765 A068128 A013222 * A133472 A213873 A219771

Adjacent sequences:  A013225 A013226 A013227 * A013229 A013230 A013231

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 01 2018

STATUS

approved

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Last modified August 14 09:27 EDT 2022. Contains 356110 sequences. (Running on oeis4.)