Numbers k such that (7*10^k + 53)/3 is prime.

Terms

a(0) =1a(1) =2a(2) =3a(3) =7a(4) =20a(5) =28a(6) =32a(7) =35a(8) =48a(9) =193a(10) =332a(11) =359a(12) =444a(13) =568a(14) =763a(15) =1414a(16) =10964a(17) =13703a(18) =15420a(19) =27384a(20) =49404a(21) =62362a(22) =65064a(23) =104113a(24) =187645