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 A195552 #9 Jun 04 2015 11:06:26 %S A195552 5,109,1189,6485,141481,1543321,8417525,183642229,2003229469, %T A195552 10925940965,238367471761,2600190307441,14181862955045, %U A195552 309400794703549,3375045015828949,18408047189707445,401601993157734841,4380805830355668361 %N A195552 Hypotenuses of primitive Pythagorean triples in A195550 and A195551. %C A195552 See A195500 for discussion and list of related sequences; see A195550 for Mathematica program. %F A195552 Empirical g.f.: -x*(x^5+x^4+5*x^3-1189*x^2-109*x-5)/(x^6-1298*x^3+1). - _Colin Barker_, Jun 04 2015 %Y A195552 Cf. A195500, A195550, A195551. %K A195552 nonn %O A195552 1,1 %A A195552 _Clark Kimberling_, Sep 21 2011