%I #2 Mar 30 2012 18:59:44

%S -11,-108,-425,720,25678,255048,1901298,12339600,73794315,418519612,

%T 2289264465,12207642976,63925371180,330387702160,1691454191604,

%U 8600517968736,43516016460465,219401923888740

%N G.f. of the z^2 coefficients of the FP2 in the third column of the A156925 matrix

%F a(n)=24*a(n-1)-254*a(n-2)+1568*a(n-3)-6291*a(n-4)+17296*a(n-5)- 33460*a(n-6)+45984*a(n-7)-44663*a(n-8)+29976*a(n-9)-13230*a(n-10)+3456*a(n-11)-405*a(n-12)

%F a(n)= 75/32+101/24*n-225/16*3^n+375/32*5^n+289/72*n^2-1/8*3^(1+n)*n^3-9/4*3^n*(n)^2- 15/2*3^n*n+19/8*n^3+ 61/72*n^4+1/6*n^5+1/72*n^6

%F G.f.: GF4(z;m=2) = z^2*(-11+156*z-627*z^2+736*z^3+591*z^4-1116*z^5-369*z^6)/((1-z)^7*(1-3*z)^4*(1-5*z))

%Y Cf. A156933

%Y Equals third column of A156925

%Y Other columns A156934, A156936, A156937

%K easy,sign

%O 2,1

%A _Johannes W. Meijer_, Feb 20 2009