Replace prime(k) with prime(2^k) in the prime factorization of n.

Terms

a(0) =1a(1) =3a(2) =7a(3) =9a(4) =19a(5) =21a(6) =53a(7) =27a(8) =49a(9) =57a(10) =131a(11) =63a(12) =311a(13) =159a(14) =133a(15) =81a(16) =719a(17) =147a(18) =1619a(19) =171a(20) =371a(21) =393a(22) =3671a(23) =189a(24) =361a(25) =933a(26) =343a(27) =477a(28) =8161a(29) =399