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 A229854 #17 Jul 12 2025 21:08:08
%S A229854 769,1153,2689,3457,4993,6529,7297,7681,9601,10369,10753,12289,13441,
%T A229854 14593,15361,18049,18433,20353,21121,22273,23041,26113,26497,26881,
%U A229854 29569,31489,31873,32257,33409,36097,37633,39937,43777,45697,49537,49921,52609,53377
%N A229854 Primes of the form 384*k + 1.
%C A229854 Not every composite Fermat number has a prime factor of the form 384*k + 1.
%H A229854 Wikipedia, <a href="http://en.wikipedia.org/wiki/Fermat_number">Fermat number</a>
%t A229854 Select[Table[384*n + 1, {n, 139}], PrimeQ]
%o A229854 (Magma) [384*n+1 : n in [1..139] | IsPrime(384*n+1)];
%Y A229854 Subsequence of A002476 (primes of form 6m + 1).
%Y A229854 Cf. A000215, A023394, A094358, A229850, A229853, A229855, A229856.
%K A229854 nonn
%O A229854 1,1
%A A229854 _Arkadiusz Wesolowski_, Oct 01 2013