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 A176922 #14 Nov 08 2023 12:12:44
%S A176922 31,151,549755813911,604462909807314587353111
%N A176922 Primes of the form 2^k + 23.
%H A176922 Vincenzo Librandi, <a href="/A176922/b176922.txt">Table of n, a(n) for n = 1..8</a>
%F A176922 a(n) = 2^A057203(n) + 23. [_R. J. Mathar_, Jun 18 2010]
%t A176922 Select[Table[2^n + 23, {n, 0, 750}], PrimeQ] (* _Vincenzo Librandi_ Jan 02 2014 *)
%o A176922 (Magma) [a: n in [0..750] | IsPrime(a) where a is 2^n+23];
%Y A176922 Cf. A000040, A057203.
%K A176922 nonn
%O A176922 1,1
%A A176922 _Vincenzo Librandi_, Apr 29 2010