a(n) is the n-th J_3-prime (Josephus_3 prime).

Terms

a(0) =3a(1) =5a(2) =27a(3) =89a(4) =1139a(5) =1219a(6) =1921a(7) =2155a(8) =5775a(9) =9047a(10) =12437a(11) =78785a(12) =105909a(13) =197559a(14) =1062657