The smallest prime that becomes 2 * prime(n), when all the bits in its binary expansion are inverted, or -1 if no such prime exists.

A339268

The smallest prime that becomes 2 * prime(n), when all the bits in its binary expansion are inverted, or -1 if no such prime exists.

Terms

    a(0) =11a(1) =549755813881a(2) =53a(3) =17a(4) =41a(5) =37a(6) =16349a(7) =89a(8) =977a(9) =197a(10) =193a(11) =181a(12) =173a(13) =937a(14) =929a(15) =149a(16) =137a(17) =389a(18) =1913a(19) =881a(20) =877a(21) =353a(22) =857a(23) =3917a(24) =317a(25) =821a(26) =3889a(27) =809a(28) =293a(29) =797

External references