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Row squared sums of triangle A118801: a(n) = Sum_{k=0..n} A118801(n,k)^2.
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%I #3 Mar 30 2012 18:36:57

%S 1,2,11,76,565,4406,35455,291264,2427113,20436202,173435251,

%T 1481052596,12711044125,109543953182,947334302951,8216780507176,

%U 71450654876625,622692860482514,5437356743763163,47561030194674972,416661242790844421

%N Row squared sums of triangle A118801: a(n) = Sum_{k=0..n} A118801(n,k)^2.

%C Self-convolution of A118803.

%o (PARI) {a(n)=sum(k=0,n,(1+(-1)^k*2^(n-k+1)*sum(j=0,k\2,binomial(n-2*j-2,k-2*j-1)))^2)}

%Y Cf. A118801, A118803.

%K nonn

%O 0,2

%A _Paul D. Hanna_, May 02 2006