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 A092009 #3 Mar 30 2012 17:29:15 %S A092009 236208,316680,480480,644280,750120,757680,792120,822120,822360, %T A092009 896280,925680,1015560,1025640,1044120,1067640,1129128,1136520, %U A092009 1255800,1274280,1299480,1391280,1484280,1487640,1489488,1572648,1616160,1707888 %N A092009 Numbers that can be expressed as the difference of the squares of primes in exactly thirteen distinct ways. %e A092009 236208 = 487^2-31^2 = 547^2-251^2 = 577^2-311^2 = 643^2-421^2 = %e A092009 787^2-619^2 = 853^2-701^2 = 2137^2-2081^2 = 2833^2-2791^2 = 4933^2-4909^2 = %e A092009 8443^2-8429^2 = 14767^2-14759^2 = 19687^2-19681^2 = 59053^2-59051^2 %Y A092009 Cf. A090781, A090782, A090788, A092000-A092020. %K A092009 nonn %O A092009 1,1 %A A092009 _Ray Chandler_, Feb 22 2004