a(0) = 2; a(n) is smallest prime containing a(n-1) as substring.

A030456

a(0) = 2; a(n) is smallest prime containing a(n-1) as substring.

Terms

    a(0) =2a(1) =23a(2) =223a(3) =1223a(4) =12239a(5) =122393a(6) =1223939a(7) =12239393a(8) =122393939a(9) =1223939399a(10) =12239393993a(11) =122393939933

External references