a(n) = prime(10*n-9).

Terms

a(0) =2a(1) =31a(2) =73a(3) =127a(4) =179a(5) =233a(6) =283a(7) =353a(8) =419a(9) =467a(10) =547a(11) =607a(12) =661a(13) =739a(14) =811a(15) =877a(16) =947a(17) =1019a(18) =1087a(19) =1153a(20) =1229a(21) =1297a(22) =1381a(23) =1453a(24) =1523a(25) =1597a(26) =1663a(27) =1741a(28) =1823a(29) =1901