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 A048628 #14 Jun 25 2021 01:52:38
%S A048628 35,143,323,667,1147,1763,2491,3599,4891,6319,7663,8383,11227,12091,
%T A048628 17399,19519,21823,26123,29503,32231,35263,43739,46367,50851,57311,
%U A048628 61063,66203,70531,77059,84823,89711,103459
%N A048628 n-th 4k+1 prime times (n+1)st 4k+3 prime.
%H A048628 Harvey P. Dale, <a href="/A048628/b048628.txt">Table of n, a(n) for n = 1..1000</a>
%F A048628 a(n) = A002144(n) * A002145(n+1). - _Sean A. Irvine_, Jun 24 2021
%t A048628 Module[{nn=100,p1,p3,len},p1=Select[Prime[Range[nn]],Mod[#,4]==1&];p3= Rest[Select[Prime[Range[nn]],Mod[#,4]==3&]];len=Min[Length[p1], Length[ p3]];Times@@@Thread[{Take[p1,len],Take[p3,len]}]] (* _Harvey P. Dale_, Jan 09 2015 *)
%Y A048628 Cf. A002144, A002145, A022757.
%K A048628 nonn
%O A048628 1,1
%A A048628 Den Roussel (DenRoussel(AT)webtv.net)