Numbers k such that 3*10^k + 97 is prime.

Terms

a(0) =1a(1) =2a(2) =4a(3) =14a(4) =19a(5) =22a(6) =87a(7) =141a(8) =228a(9) =274a(10) =441a(11) =514a(12) =721a(13) =1674a(14) =1710a(15) =2725a(16) =2858a(17) =4658a(18) =19862a(19) =20175a(20) =25474a(21) =30309a(22) =34740