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 A092017 #5 Mar 30 2012 17:34:55 %S A092017 2282280,5165160,5645640,5969040,6754440,7197960,8048040,8075760, %T A092017 8426880,8725080,9267720,10767120,11466840,12235080,12252240,12480720, %U A092017 13508880,13581960,13869240,13901160,13980120,14316120,14665560 %N A092017 Numbers that can be expressed as the difference of the squares of primes in exactly twenty-one distinct ways. %Y A092017 Cf. A090781, A090782, A090788, A092000-A092020. %K A092017 nonn %O A092017 1,1 %A A092017 _Ray Chandler_, Feb 22 2004 %E A092017 a(12)-a(23) from _Donovan Johnson_, Nov 26 2008