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A012955
tanh(tan(x)+arcsin(x))=2*x-13/3!*x^3+297/5!*x^5-14159/7!*x^7...
0
2, -13, 297, -14159, 1160001, -145101559, 25744031185, -6148333270639, 1901959189083393, -739758301216077031, 353356041582793698193, -203342136439150617071903, 138755544150262881446540993
OFFSET
0,1
MATHEMATICA
With[{nn=30}, Take[CoefficientList[Series[Tanh[Tan[x]+ArcSin[x]], {x, 0, nn}], x] Range[0, nn-1]!, {2, -1, 2}]] (* Harvey P. Dale, Dec 09 2017 *)
CROSSREFS
Sequence in context: A126742 A013051 A351022 * A357342 A011808 A011841
KEYWORD
sign
AUTHOR
Patrick Demichel (patrick.demichel(AT)hp.com)
STATUS
approved