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A012991
arcsinh(arctan(x)+arcsin(x))=2*x-9/3!*x^3+361/5!*x^5-37247/7!*x^7...
0
2, -9, 361, -37247, 7669801, -2611958283, 1332778136517, -950743937966607, 903562629244729137, -1103376848629556507859, 1683455518560856213155933, -3138189120711848323676011959
OFFSET
0,1
MATHEMATICA
With[{nn=30}, Take[CoefficientList[Series[ArcSinh[ArcTan[x]+ArcSin[x]], {x, 0, nn}], x] Range[0, nn-1]!, {2, -1, 2}]] (* Harvey P. Dale, Sep 02 2016 *)
CROSSREFS
Sequence in context: A302251 A013093 A013169 * A003818 A325619 A049299
KEYWORD
sign
AUTHOR
Patrick Demichel (patrick.demichel(AT)hp.com)
STATUS
approved