a(n) = n^10 + n.

Terms

a(0) =0a(1) =2a(2) =1026a(3) =59052a(4) =1048580a(5) =9765630a(6) =60466182a(7) =282475256a(8) =1073741832a(9) =3486784410a(10) =10000000010a(11) =25937424612a(12) =61917364236a(13) =137858491862a(14) =289254654990a(15) =576650390640