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 A268693 #9 Jun 14 2022 19:15:12 %S A268693 1,3,5,7,255,15045,20655,25755,39525,44115,46665,65535,70125,97155, %T A268693 100215,132855,144465,162945,196605,200175,277695,280755,327675, %U A268693 441915,469965,548505,688245,720375,770355,773925,789225,1017705,1027395,1110015,1114095,1127355 %N A268693 Odd numbers that are not of the form p + 2^a + 2^b with b > a > 0, and p prime. %C A268693 This sequence is infinite; in particular, 2^(2^n) - 1 is in this sequence for each n > 2. %C A268693 Not every member of this sequence greater than 7 is divisible by 255, see A268694. %H A268693 Kevin P. Thompson, <a href="/A268693/b268693.txt">Table of n, a(n) for n = 1..392</a> %Y A268693 Cf. A232565, A268694. Supersequence of A156695. %K A268693 nonn %O A268693 1,2 %A A268693 _Arkadiusz Wesolowski_, Feb 11 2016