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A012967
E.g.f.: tanh(arctan(x)+log(x+1))=2*x-1/2!*x^2-16/3!*x^3+42/4!*x^4+500/5!*x^5...
1
0, 2, -1, -16, 42, 500, -3210, -31960, 409640, 3197360, -78190200, -405352000, 20714298000, 39783504800, -7213870190800, 15836666456000, 3165414330000000, -23690623723936000, -1688397526908144000
OFFSET
0,2
LINKS
MATHEMATICA
With[{nn=20}, CoefficientList[Series[Tanh[ArcTan[x]+Log[x+1]], {x, 0, nn}], x] Range[0, nn]!] (* Harvey P. Dale, Mar 11 2014 *)
CROSSREFS
Sequence in context: A162005 A325220 A013125 * A013121 A012963 A013120
KEYWORD
sign
AUTHOR
Patrick Demichel (patrick.demichel(AT)hp.com)
EXTENSIONS
Zero prepended and definition clarified by Harvey P. Dale, Mar 11 2014
STATUS
approved