%I #3 Jul 06 2013 13:48:04
%S 4,16,64,320,1424,6400,28928,131328,599428,2746176,12627520,58237952,
%T 269284240,1247921152,5794490624,26952340480,125559053904,
%U 585733448080,2735853906496,12793091964160,59883014554112,280568427766016,1315670787139840,6174463935221760,28998036439469524,136279914514165568,640867368366269056
%N Sum of squared terms in rows of triangle A227311.
%e L.g.f.: L(x) = 4*x + 16*x^2/2 + 64*x^3/3 + 320*x^4/4 + 1424*x^5/5 + 6400*x^6/6 +...
%e where
%e exp(L(x)) = 1 + 4*x + 16*x^2 + 64*x^3 + 272*x^4 + 1168*x^5 + 5056*x^6 + 22016*x^7 +...
%o (PARI) {A227311(n,k)=n*polcoeff(polcoeff(log(1 + 2*sum(m=1,sqrtint(n),y^m*x^(m^2))+x*O(x^n)),n,x),k,y)}
%o {a(n)=sum(k=1,n,A227311(n,k)^2)}
%o for(n=1, 36, print1(a(n), ", "))
%Y Cf. A227311.
%K nonn
%O 1,1
%A _Paul D. Hanna_, Jul 06 2013
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