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 A054409 #5 Oct 15 2013 22:30:49 %S A054409 1,2,4,6,8,14,14,14,14,18,20,34,34,34,34,34,34,34,34,34,34,34,34,34, %T A054409 34,36,36,36,36,36,44,44,44,44,52,52,52,52,52,52,72,72,72,72,72,72,72, %U A054409 72,72,72,72,72,72,72,72,72,72,72,72,72,72,72,72,72,72,72,72,72,72,72,72 %N A054409 Maximal difference between consecutive primes in range [prime(n), prime(n)^2]. %e A054409 n=6, prime(6)=13, prime(6)^2=169, the maximal difference in this interval is 127-113=14, so a(6)=14 %Y A054409 Cf. A000040, A000879, A001223, A001248, A002110. %K A054409 nonn %O A054409 1,2 %A A054409 _Labos Elemer_, May 09 2000