Beginning with 7, least prime such that concatenation of first n terms and its digit reversal both are primes.

A379761

Beginning with 7, least prime such that concatenation of first n terms and its digit reversal both are primes.

Terms

    a(0) =7a(1) =3a(2) =3a(3) =31a(4) =389a(5) =1021a(6) =2243a(7) =1831a(8) =5849a(9) =15361a(10) =9887a(11) =3877a(12) =4157a(13) =919a(14) =22637a(15) =14449a(16) =27617a(17) =80221a(18) =5039a(19) =51043a(20) =14009a(21) =126079a(22) =24443a(23) =68311a(24) =49193a(25) =47059a(26) =13049a(27) =253681a(28) =271409a(29) =221227

External references