a(n) = prime(9*n).

Terms

a(0) =23a(1) =61a(2) =103a(3) =151a(4) =197a(5) =251a(6) =307a(7) =359a(8) =419a(9) =463a(10) =523a(11) =593a(12) =643a(13) =701a(14) =761a(15) =827a(16) =883a(17) =953a(18) =1019a(19) =1069a(20) =1129a(21) =1213a(22) =1279a(23) =1321a(24) =1427a(25) =1481a(26) =1543a(27) =1601a(28) =1663a(29) =1733