login
A012702
Expansion of e.g.f.: cos(arctanh(x)*log(x+1))=1-12/4!*x^4+60/5!*x^5-570/6!*x^6+3780/7!*x^7...
0
1, 0, 0, 0, -12, 60, -570, 3780, -36288, 290304, -3077160, 27976080, -325364952, 3125330208, -38076353952, 320524495200, -3277240862208, -12892686066816, 851147013155904, -38579486635656576, 1000229709289596288
OFFSET
0,5
MATHEMATICA
With[{nn=20}, CoefficientList[Series[Cos[ArcTanh[x]Log[x+1]], {x, 0, nn}], x] Range[0, nn]!] (* Harvey P. Dale, Aug 11 2017 *)
CROSSREFS
Sequence in context: A012360 A012708 A009077 * A009163 A012706 A012359
KEYWORD
sign
AUTHOR
Patrick Demichel (patrick.demichel(AT)hp.com)
EXTENSIONS
Definition clarified by Harvey P. Dale, Aug 11 2017
STATUS
approved