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A013461
Expansion of e.g.f. exp(arctan(x)-arcsinh(x)) = 1-1/3!*x^3+15/5!*x^5+10/6!*x^6-495/7!*x^7...
0
1, 0, 0, -1, 0, 15, 10, -495, -840, 29015, 87750, -2666475, -12310100, 354343275, 2287605450, -64350661375, -549013374000, 15319760415375, 166031512396750, -4630895520073875, -61922192590147500
OFFSET
0,6
MATHEMATICA
With[{nn=20}, CoefficientList[Series[Exp[ArcTan[x]-ArcSinh[x]], {x, 0, nn}], x] Range[0, nn]!] (* Harvey P. Dale, Nov 22 2013 *)
CROSSREFS
Sequence in context: A321419 A013379 A013449 * A013430 A131082 A296818
KEYWORD
sign
AUTHOR
Patrick Demichel (patrick.demichel(AT)hp.com)
EXTENSIONS
Definition clarified by Harvey P. Dale, Nov 22 2013
STATUS
approved