a(n) = prime(k) where k = n-th prime congruent to 1 mod 10.

Terms

a(0) =31a(1) =127a(2) =179a(3) =283a(4) =353a(5) =547a(6) =739a(7) =877a(8) =1087a(9) =1153a(10) =1297a(11) =1523a(12) =1597a(13) =1741a(14) =1823a(15) =2063a(16) =2221a(17) =2749a(18) =2909a(19) =3001a(20) =3259a(21) =3517a(22) =3733a(23) =3911a(24) =4153a(25) =4421a(26) =4663a(27) =4759a(28) =4943a(29) =5189