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 A273808 #7 Sep 08 2022 08:46:17
%S A273808 467,479,719,4294967759,340282366920938463463374607431768211919
%N A273808 Primes of the form 2^(2^n) + 463.
%C A273808 Terms given correspond to n = 1, 2, 3, 5 and 7.
%C A273808 Next term >= 2^2^27 + 463. - _Charles R Greathouse IV_, Jun 07 2016
%t A273808 Select[Table[2^(2^n) + 463, {n, 0, 15}], PrimeQ]
%o A273808 (Magma) [a: n in [0..16] | IsPrime(a) where a is 2^(2^n)+463];
%o A273808 (PARI) for(n=1,7, if(ispseudoprime(t=2^2^n+463), print1(t", "))) \\ _Charles R Greathouse IV_, Jun 07 2016
%Y A273808 Cf. similar sequences listed in A273547.
%K A273808 nonn
%O A273808 1,1
%A A273808 _Vincenzo Librandi_, Jun 02 2016