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 A109076 #19 Aug 02 2023 11:46:24
%S A109076 0,1,5,9,287,8273,121185,303909
%N A109076 Numbers n such that 11^n + 2 is prime.
%C A109076 No further terms < 100000. - _Ray Chandler_, Jul 30 2011
%C A109076 a(8) > 2*10^5. - _Robert Price_, May 11 2014
%e A109076 11^5 + 2 = 161053 is prime, hence 5 is a term.
%t A109076 Do[If[PrimeQ[11^n + 2], Print[n]], {n, 0, 5000}]
%o A109076 (PARI) is(n)=isprime(11^n+2) \\ _Charles R Greathouse IV_, Feb 17 2017
%K A109076 more,nonn
%O A109076 1,3
%A A109076 _Ryan Propper_, Jun 17 2005
%E A109076 8273 from _Jason Earls_, Feb 29 2008
%E A109076 Edited by _N. J. A. Sloane_, Mar 02 2008
%E A109076 a(7) from _Robert Price_, May 11 2014
%E A109076 a(8) from _Paul Bourdelais_, Aug 02 2023