Concatenations of pairs of primes that differ by 10.

Terms

a(0) =313a(1) =717a(2) =1323a(3) =1929a(4) =3141a(5) =3747a(6) =4353a(7) =6171a(8) =7383a(9) =7989a(10) =97107a(11) =103113a(12) =127137a(13) =139149a(14) =157167a(15) =163173a(16) =181191a(17) =223233a(18) =229239a(19) =241251a(20) =271281a(21) =283293a(22) =307317a(23) =337347a(24) =349359a(25) =373383a(26) =379389a(27) =409419a(28) =421431a(29) =433443