Beginning with 2, least new prime such that the concatenation a(n), a(n-1), ...a(2), a(1), a(2), ...a(n) is prime.

A090564

Beginning with 2, least new prime such that the concatenation a(n), a(n-1), ...a(2), a(1), a(2), ...a(n) is prime.

Terms

    a(0) =2a(1) =7a(2) =3a(3) =41a(4) =13a(5) =11a(6) =139a(7) =167a(8) =73a(9) =71a(10) =313a(11) =53a(12) =3a(13) =43a(14) =431a(15) =7a(16) =227a(17) =1021a(18) =1097a(19) =43a(20) =149a(21) =811a(22) =3413a(23) =163a(24) =1571a(25) =2551a(26) =1607a(27) =331a(28) =1061a(29) =991

External references