Numbers k such that (25*10^k - 73) / 3 is prime.

Terms

a(0) =1a(1) =2a(2) =5a(3) =6a(4) =40a(5) =47a(6) =49a(7) =58a(8) =67a(9) =142a(10) =170a(11) =173a(12) =232a(13) =530a(14) =539a(15) =559a(16) =1651a(17) =1858a(18) =2695a(19) =6257a(20) =6714a(21) =8854a(22) =15066a(23) =15091a(24) =16890a(25) =51366a(26) =85249a(27) =135906