a(1) = 2 then primes in nondecreasing order such that every concatenation is prime.

Terms

a(0) =2a(1) =3a(2) =3a(3) =3a(4) =3a(5) =23a(6) =43a(7) =59a(8) =67a(9) =83a(10) =199a(11) =239a(12) =421a(13) =569a(14) =613a(15) =1307a(16) =2017a(17) =2129a(18) =2467a(19) =2741a(20) =2953a(21) =3011a(22) =3319a(23) =3413a(24) =3607a(25) =3617a(26) =5449a(27) =6917a(28) =7333a(29) =7529