a(0)=1, a(n) = prime(n^3).

Terms

a(0) =1a(1) =2a(2) =19a(3) =103a(4) =311a(5) =691a(6) =1321a(7) =2309a(8) =3671a(9) =5519a(10) =7919a(11) =10957a(12) =14753a(13) =19403a(14) =24809a(15) =31319a(16) =38873a(17) =47657a(18) =57559a(19) =69031a(20) =81799a(21) =96137a(22) =112291a(23) =130073a(24) =149717a(25) =171529a(26) =195043a(27) =220861a(28) =248851a(29) =279431