A009036 Expansion of cos(sin(log(1+x))).

1, 0, -1, 3, -6, 0, 114, -1134, 9320, -75456, 640144, -5888080, 59989416, -683640048, 8694795576, -122022500040, 1861267622656, -30418406611456, 526523001326720, -9570437327493504, 181530307816180736, -3575813555711685120

Offset

0,4

Links

G. C. Greubel, Table of n, a(n) for n = 0..250

Mathematica

With[{nmax = 30}, CoefficientList[Series[Cos[Sin[Log[1 + x]]], {x, 0, nmax}], x]*Range[0, nmax]!] (* G. C. Greubel, Jul 22 2018 *)

Prog

(PARI) x='x+O('x^30); Vec(serlaplace(cos(sin(log(1+x))))) \\ G. C. Greubel, Jul 22 2018
(Magma) m:=30; R<x>:=PowerSeriesRing(Rationals(), m); b:=Coefficients(R!(Cos(Sin(Log(1+x))))); [Factorial(n-1)*b[n]: n in [1..m]]; // G. C. Greubel, Jul 22 2018

Crossrefs

Sequence in context: A125287 A264813 A009014 * A021281 A034004 A329083

Adjacent sequences: A009033 A009034 A009035 * A009037 A009038 A009039

Keyword

sign,easy

Author

R. H. Hardin

Extensions

Extended with signs by Olivier Gérard, Mar 15 1997

Status

approved