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 A225097 #6 May 22 2017 12:37:33 %S A225097 3,11,13,43,67,109,15101,43997 %N A225097 Numbers n such that (13^n + 12^n)/25 is prime. %C A225097 All terms are prime. %C A225097 a(9) > 10^5. %t A225097 Select[ Prime[ Range[1, 100000] ], PrimeQ[ (13^# + 12^#)/25 ]& ] %o A225097 (PARI) is(n)=ispseudoprime((13^n+12^n)/25) \\ _Charles R Greathouse IV_, May 22 2017 %Y A225097 Cf. A057179, A128071, A128342, A213216, A224984. %K A225097 hard,nonn,more %O A225097 1,1 %A A225097 _Robert Price_, Apr 27 2013