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 A195564 #9 Jun 04 2015 14:30:52 %S A195564 1,25,41,65,1649,2705,4289,108809,178489,283009,7179745,11777569, %T A195564 18674305,473754361,777141065,1232221121,31260608081,51279532721, %U A195564 81307919681,2062726378985,3383672018521,5365090477825,136108680404929 %N A195564 Hypotenuses of primitive Pythagorean triples in A195561 and A195562. %C A195564 See A195500 for discussion and list of related sequences; see A195562 for Mathematica program. %F A195564 Empirical g.f.: -x*(x^5+x^4+x^3-41*x^2-25*x-1) / (x^6-66*x^3+1). - _Colin Barker_, Jun 04 2015 %Y A195564 Cf. A195500, A195562, A195563. %K A195564 nonn %O A195564 1,2 %A A195564 _Clark Kimberling_, Sep 21 2011