a(n) = (2*n + 1)*16^n.A165283a(n) = (2*n + 1)*16^n.Terms a(0) =1a(1) =48a(2) =1280a(3) =28672a(4) =589824a(5) =11534336a(6) =218103808a(7) =4026531840a(8) =73014444032External referencesoeis: A165283