Primes starting and ending with 1.

Terms

a(0) =11a(1) =101a(2) =131a(3) =151a(4) =181a(5) =191a(6) =1021a(7) =1031a(8) =1051a(9) =1061a(10) =1091a(11) =1151a(12) =1171a(13) =1181a(14) =1201a(15) =1231a(16) =1291a(17) =1301a(18) =1321a(19) =1361a(20) =1381a(21) =1451a(22) =1471a(23) =1481a(24) =1511a(25) =1531a(26) =1571a(27) =1601a(28) =1621a(29) =1721