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 A195570 #9 Jun 05 2015 03:19:57 %S A195570 5,17,241,1285,4385,62177,331525,1131313,16041425,85532165,291874369, %T A195570 4138625473,22066967045,75302455889,1067749330609,5693191965445, %U A195570 19427741744993,275475188671649,1468821460117765,5012282067752305,71071530927954833 %N A195570 Hypotenuses of primitive Pythagorean triples in A195568 and A195569. %C A195570 See A195500 for discussion and list of related sequences; see A195568 for Mathematica program. %F A195570 Empirical g.f.: -x*(x^5+x^4+5*x^3-241*x^2-17*x-5) / (x^6-258*x^3+1). - _Colin Barker_, Jun 04 2015 %Y A195570 Cf. A195500, A195568, A195569. %K A195570 nonn %O A195570 1,1 %A A195570 _Clark Kimberling_, Sep 21 2011