Numbers k such that 78*10^k + 217 is prime.

Terms

a(0) =1a(1) =2a(2) =8a(3) =10a(4) =13a(5) =21a(6) =22a(7) =36a(8) =57a(9) =80a(10) =149a(11) =484a(12) =505a(13) =642a(14) =806a(15) =974a(16) =1674a(17) =34177