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 A195576 #8 Aug 04 2018 04:11:00 %S A195576 1,13,701,6161,13441,18901,254813,13741001,120767921,263470481, %T A195576 370497401,4994844413,269351100901,2367292781281,5164548355121, %U A195576 7262490035501,97908939928813,5279820266120401,46403672977902241 %N A195576 Hypotenuses of primitive Pythagorean triples in A195574 and A195575. %C A195576 See A195500 for discussion and list of related sequences; see A195574 for Mathematica program. %Y A195576 Cf. A195500, A195574, A195575. %K A195576 nonn %O A195576 1,2 %A A195576 _Clark Kimberling_, Sep 21 2011