Ulam numbers that are primes.

Terms

a(0) =2a(1) =3a(2) =11a(3) =13a(4) =47a(5) =53a(6) =97a(7) =131a(8) =197a(9) =241a(10) =409a(11) =431a(12) =607a(13) =673a(14) =739a(15) =751a(16) =983a(17) =991a(18) =1103a(19) =1433a(20) =1489a(21) =1531a(22) =1553a(23) =1709a(24) =1721a(25) =2371a(26) =2393a(27) =2447a(28) =2633a(29) =2789