login
Terms of A268693 that are not divisible by 255.
1

%I #7 Feb 11 2016 19:19:13

%S 1,3,5,7,144465,4330455

%N Terms of A268693 that are not divisible by 255.

%C The conjecture in A156695 implies that each term greater than 1 can be written in the form p + 2^x, where p is a prime. For example: 144465 - 2^2 = 144461 (a prime), 4330455 - 2^8 = 4330199 (a prime).

%Y Cf. A156695, A268693.

%K nonn,more

%O 1,2

%A _Arkadiusz Wesolowski_, Feb 11 2016