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 A062655 #20 Jul 04 2021 09:02:20 %S A062655 3,5,997,4253,52511,59221 %N A062655 Numbers k such that 89^k - 88^k is prime. %C A062655 Terms greater than 1000 are often only strong pseudoprimes. %C A062655 a(7) > 10^5. - _Robert Price_, Jun 16 2015 %t A062655 Select[Range[0, 100000], PrimeQ[89^# - 88^#] &] (* _Robert Price_, Jun 16 2015 *) %o A062655 (PARI) is(n)=ispseudoprime(89^n-88^n) \\ _Charles R Greathouse IV_, Jun 12 2017 %Y A062655 Cf. A000043, A057468, A059801, A059802, A062572-A062666. %K A062655 nonn,hard %O A062655 1,1 %A A062655 _Mike Oakes_, May 18 2001, May 19 2001 %E A062655 a(5)-a(6) from _Robert Price_ (computer run by Adam Marciniec), Jun 16 2015