This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A263645 #14 Nov 22 2015 15:21:55 %S A263645 2,52504261,55414847,79933129,152485283,166441831,177702619,197903207, %T A263645 199013093,220403959,226794259,230701763,245215801,266642731, %U A263645 304921637,321979283,335035097,355404353,359018299,369810769,388048561,412590797,445661719,506400173,540426473 %N A263645 Primes that are neither of the form p + 2^k nor of the form p - 2^k with k > 0, and p prime. %C A263645 Primes p such that for all k > 0 the numbers p + 2^k and p - 2^k are nonprimes. %C A263645 Except for 2, this sequence is the intersection of A065381 and A137715. %Y A263645 Cf. A065381, A137715, A153352, A180247, A263644. %K A263645 nonn %O A263645 1,1 %A A263645 _Arkadiusz Wesolowski_, Oct 22 2015