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 A012661 Expansion of e.g.f. arcsinh(tanh(x) * exp(x)). 1
 0, 1, 2, 0, -16, -60, 152, 4200, 25664, -186480, -5704288, -39336000, 690642944, 20876856000, 130293779072, -5328943401600, -157981983410176, -643110850533120, 73817890476319232, 2117532947966822400, -32035386635677696, -1662866885052169251840, -45187519429186322679808 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,3 LINKS Vincenzo Librandi, Table of n, a(n) for n = 0..200 EXAMPLE x + 2/2!*x^2 - 16/4!*x^4 - 60/5!*x^5 + 152/6!*x^6 ... MAPLE seq(coeff(series(factorial(n)*arcsinh(tanh(x)*exp(x)), x, n+1), x, n), n=0..25); # Muniru A Asiru, Jul 24 2018 MATHEMATICA With[{nn=25}, Drop[CoefficientList[Series[ArcSinh[Tanh[x]Exp[x]], {x, 0, nn}], x] Range[0, nn]!]] (* Vincenzo Librandi, Jul 24 2018 *) CROSSREFS Sequence in context: A098336 A116093 A012409 * A345652 A009528 A178987 Adjacent sequences: A012658 A012659 A012660 * A012662 A012663 A012664 KEYWORD sign AUTHOR Patrick Demichel (patrick.demichel(AT)hp.com) EXTENSIONS a(0) inserted and title improved by Sean A. Irvine, Jul 23 2018 STATUS approved

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Last modified March 31 05:18 EDT 2023. Contains 361634 sequences. (Running on oeis4.)