Juxtapose pairs of primes (starting at 1).

Terms

a(0) =12a(1) =35a(2) =711a(3) =1317a(4) =1923a(5) =2931a(6) =3741a(7) =4347a(8) =5359a(9) =6167a(10) =7173a(11) =7983a(12) =8997a(13) =101103a(14) =107109a(15) =113127a(16) =131137a(17) =139149a(18) =151157a(19) =163167a(20) =173179a(21) =181191a(22) =193197a(23) =199211a(24) =223227a(25) =229233a(26) =239241a(27) =251257a(28) =263269a(29) =271277