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A012362 arcsinh(tan(x)*exp(x)) = x+2/2!*x^2+4/3!*x^3-60/5!*x^5-488/6!*x^6... 0
0, 1, 2, 4, 0, -60, -488, -1416, 20160, 427280, 3830432, -7233536, -955342080, -18140316480, -120169970048, 3583792700544, 145171043297280, 2388380775676160, -7380519436860928, -1710892457585202176 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Table of n, a(n) for n=0..19.

MATHEMATICA

CoefficientList[Series[ArcSinh[Tan[x]*Exp[x]], {x, 0, 20}], x]* Range[0, 20]! (* Vaclav Kotesovec, Oct 30 2013 *)

CROSSREFS

Sequence in context: A055871 A012716 A173220 * A012710 A333367 A287761

Adjacent sequences:  A012359 A012360 A012361 * A012363 A012364 A012365

KEYWORD

sign

AUTHOR

Patrick Demichel (patrick.demichel(AT)hp.com)

EXTENSIONS

Prepended missing a(0)=0, Vaclav Kotesovec, Oct 30 2013

STATUS

approved

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Last modified May 26 17:16 EDT 2022. Contains 354092 sequences. (Running on oeis4.)