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 A009028 Expansion of cos(log(1+x)*cos(x)). 1
 1, 0, -1, 3, 2, -20, -40, 630, -3092, 13032, -133580, 1827980, -21237632, 244445760, -3154775208, 45173375520, -689191245168, 11093076554048, -189142200382672, 3415285850672880, -65041019882791840, 1301902345882783680 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,4 LINKS G. C. Greubel, Table of n, a(n) for n = 0..250 MATHEMATICA With[{nn=30}, CoefficientList[Series[Cos[Log[1+x]*Cos[x]], {x, 0, nn}], x] Range[0, nn]!] (* Harvey P. Dale, Aug 21 2016 *) PROG (PARI) x='x+O('x^30); Vec(serlaplace( cos(log(1+x)*cos(x)) )) \\ G. C. Greubel, Jul 22 2018 (MAGMA) m:=30; R:=PowerSeriesRing(Rationals(), m); b:=Coefficients(R!(Cos(Log(1+x))*Cos(x)))); [Factorial(n-1)*b[n]: n in [1..m]]; // G. C. Greubel, Jul 22 2018 CROSSREFS Sequence in context: A098655 A065038 A123225 * A009022 A009033 A298661 Adjacent sequences:  A009025 A009026 A009027 * A009029 A009030 A009031 KEYWORD sign,easy AUTHOR EXTENSIONS Extended with signs by Olivier Gérard, Mar 15 1997 Previous Mathematica program replaced by Harvey P. Dale, Aug 21 2016 STATUS approved

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Last modified June 19 15:03 EDT 2021. Contains 345141 sequences. (Running on oeis4.)