%I
%S 1,9,26,25,36,133,132,81,375,374,144,806,805,225,1480,1479,
%T 324,2451,2450,441,3773,3772,576,5500,5499,729,7686,7685,900,
%U 10385,10384,1089,13651,13650,1296,17538,17537
%N Hankel transform of expansion of 1/c(x)^3, c(x) the g.f. of A000108.
%C Hankel transform of A115142.
%H <a href="/index/Rec">Index entries for linear recurrences with constant coefficients</a>, signature (4,10,16,19,16,10,4,1).
%F G.f.: (1+x)(1x)(15x+x^2)/(1+x+x^2)^4;
%F a(n)=(2n^3+9n^2+7n6)*cos(2*pi*n/3)/6sqrt(3)*(2n^3+21n^2+55n+42)*sin(2*pi*n/3)/18;
%K easy,sign
%O 0,2
%A _Paul Barry_, Sep 19 2008
