a(n) = (9*n + 2)^5.

Terms

a(0) =32a(1) =161051a(2) =3200000a(3) =20511149a(4) =79235168a(5) =229345007a(6) =550731776a(7) =1160290625a(8) =2219006624a(9) =3939040643a(10) =6590815232a(11) =10510100501a(12) =16105100000a(13) =23863536599a(14) =34359738368a(15) =48261724457a(16) =66338290976a(17) =89466096875a(18) =118636749824a(19) =154963892093a(20) =199690286432a(21) =254194901951a(22) =320000000000