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A012718 cosh(arctanh(x)*exp(x))=1+1/2!*x^2+6/3!*x^3+33/4!*x^4+180/5!*x^5... 0
1, 0, 1, 6, 33, 180, 1185, 8890, 79233, 769608, 8392065, 97609358, 1249180449, 16946392892, 249854555041, 3881392411650, 64853211006977, 1135530767344144, 21209811847666689, 413312033834754966 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,4
LINKS
MATHEMATICA
With[{nn=20}, CoefficientList[Series[Cosh[ArcTanh[x]Exp[x]], {x, 0, nn}], x] Range[0, nn]!] (* Harvey P. Dale, May 15 2013 *)
CROSSREFS
Sequence in context: A138395 A050151 A009162 * A297221 A006630 A367850
KEYWORD
nonn
AUTHOR
Patrick Demichel (patrick.demichel(AT)hp.com)
STATUS
approved

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Last modified July 23 19:18 EDT 2024. Contains 374553 sequences. (Running on oeis4.)