Numbers formed by concatenating two successive primes and their product.

Terms

a(0) =236a(1) =3515a(2) =5735a(3) =71177a(4) =1113143a(5) =1317221a(6) =1719323a(7) =1923437a(8) =2329667a(9) =2931899a(10) =31371147a(11) =37411517a(12) =41431763a(13) =43472021a(14) =47532491a(15) =53593127a(16) =59613599a(17) =61674087a(18) =67714757a(19) =71735183a(20) =73795767a(21) =79836557a(22) =83897387