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 A333664 #28 Jul 02 2021 02:00:04 %S A333664 2321204055,5231769977,9913873697,20866771125,31610423987,32781538517, %T A333664 36537262157,40472098305,55135116465,58852670687,59789331177, %U A333664 74514337967,78206135657,92237967447,96154659567,96567686195,106053318825,121476304065,174983141235,196311688647,200394128147,220092205085,222433800045,236131373415,248686299537 %N A333664 Numbers k such that k + 2, k^2 + 2^2, k^4 + 2^4, k^8 + 2^8, k^16 + 2^16 and k^32 + 2^32 are primes. %H A333664 Chai Wah Wu, <a href="/A333664/b333664.txt">Table of n, a(n) for n = 1..53</a> %Y A333664 Subsequence of A285390. %K A333664 nonn %O A333664 1,1 %A A333664 _Chai Wah Wu_, Sep 03 2020 %E A333664 a(12)-a(19) from _Chai Wah Wu_, Sep 04 2020 %E A333664 a(20)-a(25) from _Bert Dobbelaere_, Sep 06 2020