a(n) = 2^(n^2)*(2^(2n+1)/3 + 1/3).A165928a(n) = 2^(n^2)*(2^(2n+1)/3 + 1/3).Terms a(0) =1a(1) =6a(2) =176a(3) =22016a(4) =11206656a(5) =22917677056External referencesoeis: A165928