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 A273552 #10 Sep 08 2022 08:46:16
%S A273552 269,271,283,523,4294967563
%N A273552 Primes of the form 2^(2^n) + 267.
%C A273552 Terms given correspond to n = 0, 1, 2, 3, and 5.
%C A273552 Next term >= 2^2^29 + 267. - _Charles R Greathouse IV_, Jun 08 2016
%t A273552 Select[Table[2^(2^n) + 267, {n, 0, 15}], PrimeQ]
%o A273552 (Magma) [a: n in [0..16] | IsPrime(a) where a is 2^(2^n)+267];
%o A273552 (PARI) for(n=0, 5, if(ispseudoprime(t=2^2^n+267), print1(t", "))) \\ _Charles R Greathouse IV_, Jun 08 2016
%Y A273552 Cf. similar sequences listed in A273547.
%K A273552 nonn
%O A273552 1,1
%A A273552 _Vincenzo Librandi_, Jun 01 2016