a(n) = 3^n*n^(n-1).A038061a(n) = 3^n*n^(n-1).Terms a(0) =3a(1) =18a(2) =243a(3) =5184a(4) =151875a(5) =5668704a(6) =257298363a(7) =13759414272a(8) =847288609443External referencesoeis: A038061