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 A192319 #14 Mar 04 2019 11:19:54 %S A192319 1,1358,1359,1360,31464,31465,31466,31467,31468 %N A192319 Numbers k such that the half-open interval (k-5*sqrt(sqrt(k)), k] does not contain primes. %C A192319 a(9) = 31468 is probably the last term. Any further terms must be greater than 1.5 * 10^18. [_Charles R Greathouse IV_, Jun 27 2011] %p A192319 isA192319 := proc(n) phigh := n ; plow := ceil(n-5*root[4](n))-1 ; numtheory[pi](phigh)-numtheory[pi](plow) = 0 ; end proc: %p A192319 for n from 1 do if isA192319(n) then print(n); end if; end do: # _R. J. Mathar_, Jul 10 2011 %o A192319 (PARI) isA192319(n)=nextprime(floor(n+1-5*n^.25))>n \\ _Charles R Greathouse IV_, Jun 27 2011 %Y A192319 Subsequence of A192320. %Y A192319 Cf. A000040, A005669. %K A192319 nonn,more %O A192319 1,2 %A A192319 _Juri-Stepan Gerasimov_, Jun 27 2011