Numbers k such that (23*10^k + 91)/3 is prime.

Terms

a(0) =1a(1) =2a(2) =4a(3) =15a(4) =16a(5) =19a(6) =20a(7) =26a(8) =38a(9) =47a(10) =52a(11) =75a(12) =122a(13) =191a(14) =246a(15) =257a(16) =294a(17) =305a(18) =374a(19) =592a(20) =682a(21) =729a(22) =1092a(23) =2053a(24) =2997a(25) =4065a(26) =13936a(27) =17214a(28) =19059a(29) =37433