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 A263644 #11 Nov 22 2015 15:21:41 %S A263644 30666137,31210219,52109063,52504261,55414847,55876981,57816799, %T A263644 60097043,63723707,68748319,79933129,87747827,88486403,93034073, %U A263644 104218883,131873509,138385817,152485283,155269609,158241023,165795677,166441831,177702619,197903207 %N A263644 Odd numbers that are neither of the form p + 2^k nor of the form p - 2^k with k > 0, and p prime. %C A263644 Odd n such that for all k > 0 the numbers n + 2^k and n - 2^k are nonprimes. %F A263644 A006285 INTERSECT A076336. %Y A263644 Cf. A006285, A076335, A076336. Subsequence of A255967. A263645 gives the primes. %K A263644 nonn %O A263644 1,1 %A A263644 _Arkadiusz Wesolowski_, Oct 22 2015