Array read by rows: row n lists the first two primes with n digits.

Terms

a(0) =2a(1) =3a(2) =11a(3) =13a(4) =101a(5) =103a(6) =1009a(7) =1013a(8) =10007a(9) =10009a(10) =100003a(11) =100019a(12) =1000003a(13) =1000033a(14) =10000019a(15) =10000079a(16) =100000007a(17) =100000037a(18) =1000000007a(19) =1000000009a(20) =10000000019a(21) =10000000033a(22) =100000000003a(23) =100000000019