Numbers that are the product of distinct primes with prime subscripts raised to prime powers.

Terms

a(0) =1a(1) =9a(2) =25a(3) =27a(4) =121a(5) =125a(6) =225a(7) =243a(8) =289a(9) =675a(10) =961a(11) =1089a(12) =1125a(13) =1331a(14) =1681a(15) =2187a(16) =2601a(17) =3025a(18) =3125a(19) =3267a(20) =3375a(21) =3481a(22) =4489a(23) =4913a(24) =6075a(25) =6889a(26) =7225a(27) =7803a(28) =8649a(29) =11881