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 A228573 #13 Jun 13 2017 10:32:26 %S A228573 41,97,1459,89227,91837 %N A228573 Numbers n such that (17^n + 16^n)/33 is prime. %C A228573 All terms are primes. %C A228573 a(6) > 10^5. %t A228573 Select[ Prime[ Range[1, 100000] ], PrimeQ[ (17^# + 16^#)/33 ]& ] %o A228573 (PARI) is(n)=ispseudoprime((17^n+16^n)/33) \\ _Charles R Greathouse IV_, Jun 13 2017 %Y A228573 Cf. A227170, A221637, A228558, A227046. %K A228573 hard,nonn,more %O A228573 1,1 %A A228573 _Robert Price_, Aug 25 2013