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A013012
Expansion of e.g.f.: log(cos(x)+arctan(x))=x-2/2!*x^2+3/3!*x^3-12/4!*x^4+73/5!*x^5...
0
0, 1, -2, 3, -12, 73, -440, 2779, -23968, 260177, -2866432, 32853491, -441968384, 6787498521, -108247087104, 1803655970635, -33080353591296, 660549566885793, -13769854019436544, 299826162055728355
OFFSET
0,3
MATHEMATICA
With[{nn=20}, CoefficientList[Series[Log[Cos[x]+ArcTan[x]], {x, 0, nn}], x] Range[0, nn]!] (* Harvey P. Dale, Aug 27 2015 *)
CROSSREFS
Sequence in context: A099805 A009269 A012396 * A009594 A074179 A012586
KEYWORD
sign
AUTHOR
Patrick Demichel (patrick.demichel(AT)hp.com)
EXTENSIONS
Zero prepended and definition clarified by Harvey P. Dale, Aug 27 2015
STATUS
approved