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 A285390 #21 Sep 10 2020 03:04:35 %S A285390 1,1938357,12543605,42052067,42916485,48724977,89483837,94041095, %T A285390 94101375,129136065,138460937,145198547,153488937,172741167,182885915, %U A285390 215999297,217054557,217734965,249913685,271516605,277401597,285433077,295266797,306256175 %N A285390 Numbers n such that n + 2, n^2 + 2^2, n^4 + 2^4, n^8 + 2^8 and n^16 + 2^16 are primes. %C A285390 Are there any n such that n^32 + 2^32 is also prime? %C A285390 a(87) = 2321204055 and a(156) = 5231769977 are the first 2 terms such that n^32 + 2^32 is prime. - _Chai Wah Wu_, Sep 03 2020 %H A285390 Chai Wah Wu, <a href="/A285390/b285390.txt">Table of n, a(n) for n = 1..6400</a> %Y A285390 Subsequence of A192794. Cf. A070689. %K A285390 nonn %O A285390 1,2 %A A285390 _Zak Seidov_, Apr 18 2017