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 A054816 #3 Mar 30 2012 18:51:25 %S A054816 1867,2531,3457,9613,21487,23011,25237,26107,32183,33403,33931,39097, %T A054816 40813,41227,44263,47287,48817,55897,57787,67033,70117,74287,74707, %U A054816 74713,75149,75161,82981,84313,87869,88411,88657,103801,103903 %N A054816 Fourth term of strong prime sextets: p(m-2)-p(m-3) > p(m-1)-p(m-2) > p(m)-p(m-1) > p(m+1)-p(m) > p(m+2)-p(m+1). %Y A054816 Cf. A051634, A054800-A054840. %K A054816 nonn %O A054816 0,1 %A A054816 _Henry Bottomley_, Apr 10 2000