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 A137654 #20 Nov 30 2024 12:54:29
%S A137654 1,4,15,157,432,6008,14821,23812,24192,53821
%N A137654 Numbers k such that 12^k + 11 is prime.
%C A137654 a(7) > 8000. - _Jinyuan Wang_, Mar 03 2020
%t A137654 Do[If[PrimeQ[(12^n+11)],Print[n]],{n,2000}]
%t A137654 Select[Range[500],PrimeQ[12^#+11]&] (* _Harvey P. Dale_, Oct 15 2015 *)
%o A137654 (PARI) is(n)=ispseudoprime(12^n+11) \\ _Charles R Greathouse IV_, Jun 06 2017
%Y A137654 Cf. A137652, A137653.
%K A137654 nonn,more
%O A137654 1,2
%A A137654 _Zak Seidov_, Feb 01 2008
%E A137654 a(6) from _Jinyuan Wang_, Mar 03 2020
%E A137654 a(7)-a(9) from _Michael S. Branicky_, Mar 15 2023
%E A137654 a(10) from _Michael S. Branicky_, Nov 30 2024