a(n) = 2^(n^2)*(2^(2*n+1) - 1).A190999a(n) = 2^(n^2)*(2^(2*n+1) - 1).Terms a(0) =1a(1) =14a(2) =496a(3) =65024a(4) =33488896a(5) =68685922304External referencesoeis: A190999