a(1) = 2, a(n+1) = a(n) * (1 + n + a(n))/n.A258622a(1) = 2, a(n+1) = a(n) * (1 + n + a(n))/n.Terms a(0) =2a(1) =8a(2) =44a(3) =704a(4) =124784a(5) =3114359072External referencesoeis: A258622