a(n) = (11*n+3)^5.

Terms

a(0) =243a(1) =537824a(2) =9765625a(3) =60466176a(4) =229345007a(5) =656356768a(6) =1564031349a(7) =3276800000a(8) =6240321451a(9) =11040808032a(10) =18424351793a(11) =29316250624a(12) =44840334375a(13) =66338290976a(14) =95388992557a(15) =133827821568a(16) =183765996899