OFFSET
0,2
COMMENTS
Binomial transform of A081562.
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 0..200
FORMULA
E.g.f.: exp(2*x) * exp(2*cosh(x))/e^2 = exp(2*cosh(x)+2*x-2).
MAPLE
seq(coeff(series(exp(2*cosh(x)+2*x-2), x, n+1)*factorial(n), x, n), n = 0 .. 30); # G. C. Greubel, Aug 13 2019
MATHEMATICA
With[{nn = 30}, CoefficientList[Series[Exp[2 Cosh[x] + 2 x - 2], {x, 0, nn}], x] Range[0, nn]!] (* Vincenzo Librandi, Aug 08 2013 *)
PROG
(PARI) my(x='x+O('x^30)); Vec(serlaplace( exp(2*cosh(x)+2*x-2) )) \\ G. C. Greubel, Aug 13 2019
(Magma) m:=30; R<x>:=PowerSeriesRing(Rationals(), m); b:=Coefficients(R!( Exp(2*Cosh(x)+2*x-2) )); [Factorial(n-1)*b[n]: n in [1..m]]; // G. C. Greubel, Aug 13 2019
(Sage) [factorial(n)*( exp(2*cosh(x)+2*x-2) ).series(x, n+1).list()[n] for n in (0..30)] # G. C. Greubel, Aug 13 2019
CROSSREFS
KEYWORD
easy,nonn
AUTHOR
Paul Barry, Mar 22 2003
STATUS
approved