[ exp(11/17)*n! ].

Terms

a(0) =1a(1) =3a(2) =11a(3) =45a(4) =229a(5) =1375a(6) =9625a(7) =77007a(8) =693070a(9) =6930700a(10) =76237701a(11) =914852418a(12) =11893081443a(13) =166503140203