Odd k for which k+2^m is composite for all m < k.

Terms

a(0) =773a(1) =2131a(2) =2491a(3) =4471a(4) =5101a(5) =7013a(6) =8543a(7) =10711a(8) =14717a(9) =17659a(10) =19081a(11) =19249a(12) =20273a(13) =21661a(14) =22193a(15) =28433a(16) =35461a(17) =37967a(18) =39079a(19) =40291a(20) =41693a(21) =48527a(22) =60443a(23) =60451a(24) =60947a(25) =64133a(26) =75353a(27) =78557