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A012134 exp(arcsin(arctanh(x)))=1+x+1/2!*x^2+4/3!*x^3+13/4!*x^4+84/5!*x^5... 1
1, 1, 1, 4, 13, 84, 469, 4208, 33433, 386064, 3984681, 56523072, 718210725, 12121690944, 183013440765, 3589856932608, 62801454477105, 1406019035808000, 27970921286867025, 704535958463063040 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,4
LINKS
MATHEMATICA
With[{nn=20}, CoefficientList[Series[Exp[ArcSin[ArcTanh[x]]], {x, 0, nn}], x] Range[0, nn]!] (* Harvey P. Dale, Oct 08 2011 *)
CROSSREFS
Sequence in context: A197752 A241905 A012258 * A088946 A131590 A281182
KEYWORD
nonn
AUTHOR
Patrick Demichel (patrick.demichel(AT)hp.com)
STATUS
approved

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Last modified February 27 19:16 EST 2024. Contains 370378 sequences. (Running on oeis4.)