105125000domain: NAppears in sequencesNumbers that are the sum of 2 nonzero squares in exactly 11 ways.at n=11A236711a(n) = sqrt( Product_{j=1..n} Product_{k=1..6} (4*sin((2*j-1)*Pi/(2*n))^2 + 4*sin((2*k-1)*Pi/6)^2) ).at n=4A341545