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 A116455 #14 Aug 24 2019 07:05:56 %S A116455 9,27,36,125,2197,3136,32768,79524,97344,503284375 %N A116455 Perfect powers n with no primes between n and the next smaller perfect power, which is in A116086. %C A116455 No other terms < 10^18. - _Jud McCranie_, Nov 03 2013 %C A116455 No other terms < 4.5*10^18. - _Giovanni Resta_, Apr 28 2014 %H A116455 Wikipedia, <a href="http://en.wikipedia.org/wiki/Redmond-Sun_conjecture">Redmond-Sun conjecture</a> %Y A116455 Cf. A001597 (perfect powers), A116086. %Y A116455 Cf. A068435 (for prime powers). %K A116455 hard,nonn %O A116455 1,1 %A A116455 _T. D. Noe_, Mar 28 2006