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 A147621 The 3rd Witt transform of A000292. 1

%I

%S 0,0,0,0,4,26,120,455,1456,4122,10608,25194,55980,117572,235144,

%T 450681,832048,1485800,2575368,4345965,7158060,11532402,18209100,

%U 28224105,43008120,64512240,95365920,139075245,200268432,284997384,401107356

%N The 3rd Witt transform of A000292.

%C The 2nd Witt transform is essentially in A032094.

%H Vincenzo Librandi, <a href="/A147621/b147621.txt">Table of n, a(n) for n = 0..1000</a>

%H Pieter Moree, <a href="http://dx.doi.org/10.1016/j.disc.2005.03.004">The formal series Witt transform</a>, Discr. Math. no. 295 vol. 1-3 (2005) 143-160.

%F G.f.: x^4(2x^2-x+2)(2x^4-2x^3+9x^2-2x+2)/((1-x)^12*(1+x+x^2)^4).

%t CoefficientList[Series[x^4(2*x^2 - x + 2)(2*x^4 - 2*x^3 + 9*x^2 - 2*x+2)/((1-x)^12 * (1 + x + x^2)^4), {x, 0, 40}], x] (* _Vincenzo Librandi_ Dec 13 2012 *)

%K easy,nonn

%O 0,5

%A _R. J. Mathar_, Nov 08 2008

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Last modified May 23 19:07 EDT 2019. Contains 323528 sequences. (Running on oeis4.)