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 A012056 sinh(sin(arctanh(x)))=x+2/3!*x^3+16/5!*x^5+216/7!*x^7-1280/9!*x^9... 0
 1, 2, 16, 216, -1280, -1141504, -263392128, -64804059904, -18858549039104, -6592583427379200, -2757743938862710784, -1367930584522073079808, -796483574916192660455424, -539009967859883250211815424 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 LINKS Table of n, a(n) for n=0..13. MATHEMATICA With[{nn=30}, Take[CoefficientList[Series[Sinh[Sin[ArcTanh[x]]], {x, 0, nn}], x] Range[0, nn-1]!, {2, -1, 2}]] (* Harvey P. Dale, Apr 29 2018 *) CROSSREFS Sequence in context: A360939 A114531 A365585 * A062971 A267782 A012164 Adjacent sequences: A012053 A012054 A012055 * A012057 A012058 A012059 KEYWORD sign AUTHOR Patrick Demichel (patrick.demichel(AT)hp.com) STATUS approved

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Last modified December 2 23:17 EST 2023. Contains 367526 sequences. (Running on oeis4.)