a(n)^3 contains n-th prime as a substring.

Terms

a(0) =3a(1) =7a(2) =5a(3) =3a(4) =45a(5) =11a(6) =12a(7) =13a(8) =47a(9) =9a(10) =11a(11) =15a(12) =81a(13) =7a(14) =63a(15) =37a(16) =19a(17) =21a(18) =23a(19) =83a(20) =46a(21) =31a(22) =18a(23) =29a(24) =13a(25) =106a(26) =47a(27) =221a(28) =103a(29) =225