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 A046848 #15 Jul 27 2025 08:41:37
%S A046848 2,67,389,32212254749,584115552289,1861861819085211933448282832989,
%T A046848 22747455000408352326750293979672813380881340606518608030931171147991
%N A046848 Primes of form k*2^k+(k-1).
%C A046848 The next term has 341 digits. - _Harvey P. Dale_, Apr 15 2017
%H A046848 Amiram Eldar, <a href="/A046848/b046848.txt">Table of n, a(n) for n = 1..9</a>
%F A046848 a(n) = A069229(A046849(n)) - 1. - _Amiram Eldar_, Jul 27 2025
%t A046848 Select[Table[n 2^n+n-1,{n,300}],PrimeQ] (* _Harvey P. Dale_, Apr 15 2017 *)
%Y A046848 Cf. A046849, A069229.
%K A046848 nonn
%O A046848 1,1
%A A046848 _Felice Russo_