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 A057739 #7 Apr 07 2019 16:41:27
%S A057739 11,29,
%T A057739 2088595827392656793085408064780643444068898148936888424953199350269
%N A057739 Primes of the form 3^p + 2, where p is prime.
%C A057739 No additional terms up through prime(1000). - _Harvey P. Dale_, Apr 07 2019
%e A057739 a(2) = 3^3 + 2 = 29, a(3) = 3^139 + 2
%t A057739 Select[Table[3^p+2,{p,Prime[Range[140]]}],PrimeQ] (* _Harvey P. Dale_, Apr 07 2019 *)
%Y A057739 Cf. A057738.
%K A057739 nonn,bref
%O A057739 1,1
%A A057739 _G. L. Honaker, Jr._, Oct 29 2000