Partial sums of binomial(2n,n)^2.

Terms

a(0) =1a(1) =5a(2) =41a(3) =441a(4) =5341a(5) =68845a(6) =922621a(7) =12701245a(8) =178338145a(9) =2542242545a(10) =36677022081a(11) =534311328705