Numbers k such that 5*10^k + 87 is prime.

Terms

a(0) =1a(1) =2a(2) =3a(3) =4a(4) =6a(5) =16a(6) =38a(7) =39a(8) =46a(9) =61a(10) =62a(11) =100a(12) =116a(13) =152a(14) =190a(15) =298a(16) =472a(17) =642a(18) =688a(19) =1676a(20) =1971a(21) =2338a(22) =4389a(23) =4520a(24) =4986a(25) =7765a(26) =9428a(27) =10820a(28) =18984a(29) =19797