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 A226530 #28 Jan 11 2025 16:26:20 %S A226530 1,70906,167176,204462,249830,321164,330716,332554,429370,499310, %T A226530 524552,553602,743788,825324,831648,855124,999236,1041870,1074542, %U A226530 1096382,1113768,1161054,1167528,1169486,1171824,1210354,1217284,1277444,1519380,1755378,1909372,1922592,1986700,2034902,2147196,2167350 %N A226530 Numbers b such that b^(2^15) + 1 is prime (a generalized Fermat prime). %H A226530 Jeppe Stig Nielsen, <a href="/A226530/b226530.txt">Table of n, a(n) for n = 1..4346</a> (all terms below 460*10^6; terms 1..2729 from Ray Chandler) %H A226530 PrimeGrid, <a href="http://www.primegrid.com/gfn_history.php#n15">GFN Prime Search Status and History: n=15</a>. %o A226530 (PARI) is(b)=isprime(b^2^15+1) \\ _Charles R Greathouse IV_, Feb 17 2017 %Y A226530 Cf. A056993, A005574, A000068, A006314, A006313, A006315, A006316, A056994, A056995, A057465, A057002, A088361, A088362, A226528, A226529, A251597, A253854, A244150, A243959, A321323. %K A226530 nonn,hard %O A226530 1,2 %A A226530 _Robert G. Wilson v_, Jun 09 2013