Numbers k such that 5*10^k + 11 is prime.

Terms

a(0) =1a(1) =3a(2) =6a(3) =35a(4) =51a(5) =84a(6) =123a(7) =1589a(8) =1591a(9) =4911a(10) =6221a(11) =48645a(12) =78504a(13) =107355