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 A214658 #11 Oct 17 2015 07:48:38 %S A214658 2,3,31,40519,51061 %N A214658 Numbers n such that 24^n - 23^n is prime or a strong pseudoprime. %C A214658 All terms are prime. %C A214658 No other terms less than 10^5. - _Robert Price_, Jul 24 2012 %t A214658 Select[Range[10^5], PrimeQ[24^#-23^# ]&] %Y A214658 Cf. A000043, A057468, A059801, A059802, A059803, A062572-A062589, A214655, A062592-A062666. %K A214658 nonn,hard,bref,more %O A214658 1,1 %A A214658 _Robert Price_, Jul 24 2012