a(n) is the largest prime p such that p/PrimePi(p) < n.

Terms

a(0) =7a(1) =31a(2) =113a(3) =359a(4) =1129a(5) =3089a(6) =8467a(7) =24281a(8) =64717a(9) =175141a(10) =481447a(11) =1304713a(12) =3524621a(13) =9560081a(14) =25874773a(15) =70119967a(16) =189969349a(17) =514282961a(18) =1394199299a(19) =3779856617a(20) =10246936393a(21) =27788573801a(22) =75370126379a(23) =204475055189a(24) =554805820519