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 A325914 #32 Sep 14 2019 16:10:00 %S A325914 5,113,140737471578113,9444732965601851473921, %T A325914 604462909806215075725313,10384593717069655112945804582584321, %U A325914 2854495385411919762116496381035264358442074113,187072209578355573530071639244871112681892570202113 %N A325914 Primes of the form (2^k-1)*2^(k+1)+1. %C A325914 The next two terms are 883423532389192164791648750371459256584513952652893606156996040365965313 %C A325914 and 3533694129556768659166595001485837028996511802181406170435598282024550401. - _N. J. A. Sloane_, Sep 13 2019 %Y A325914 These are the primes in A092440. See A006598 for the values of k. %K A325914 nonn %O A325914 1,1 %A A325914 _Gary Wright_, Sep 08 2019 %E A325914 Edited by _N. J. A. Sloane_, Sep 13 2019