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A013079
E.g.f.: sec(arcsinh(x)+log(x+1)) = 1 + 4/2!*x^2 - 6/3!*x^3 + 91/4!*x^4 - 470/5!*x^5 + ...
0
1, 0, 4, -6, 91, -470, 6100, -57225, 822065, -11044260, 184836950, -3164767375, 61845881375, -1272676666950, 28707736665400, -686107336312125, 17613438383958625, -478324499820401000, 13791544596522540250
OFFSET
0,3
MATHEMATICA
With[{nn=20}, CoefficientList[Series[Sec[ArcSinh[x]+Log[x+1]], {x, 0, nn}], x] Range[0, nn]!] (* Harvey P. Dale, Sep 07 2012 *)
CROSSREFS
Sequence in context: A245011 A375671 A012897 * A222495 A307101 A087934
KEYWORD
sign
AUTHOR
Patrick Demichel (patrick.demichel(AT)hp.com)
EXTENSIONS
Definition clarified by Harvey P. Dale, Sep 07 2012
STATUS
approved