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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
OFFSET
0,5
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 A372990
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