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 A226485 #9 Jun 13 2013 15:05:22 %S A226485 2,6,8,12,14,18,20,26,30,32,32,36,42,42,44,48,50,54,56,62,68,72,72,74, %T A226485 78,84,86,90,92,92,96,98,102,102,110,110,114,116,120,128,132,132,134, %U A226485 138,140,144,146,152,152,156,158,162,162,168,174,176,182,182 %N A226485 Integer part of length of median to hypotenuse of primitive Pythagorean triangles sorted on hypotenuse. %C A226485 The median to hypotenuse is equal to the circumradius. %C A226485 The length of the median is sqrt((a^2)/2 + (b^2)/2 - (c^2)/4) where a,b,c are sides of the triangle. In case of Pythagorean triangles, m=h/2 were h is the hypotenuse. %H A226485 Ron Knott, <a href="http://www.maths.surrey.ac.uk/hosted-sites/R.Knott/Pythag/pythag.html">Pythagorean Triples and Online Calculators</a> %F A226485 a(n) = floor(A020882(n)/2). %e A226485 a(1)=2 as it is the integer portion of the length of the median to hypotenuse of triangle having sides 3,4,5. %e A226485 Similarly, a(5)=14 as it is the integer portion of the length of the median to hypotenuse of triangle having sides 20,21,29. %Y A226485 Cf. A020882. %K A226485 nonn %O A226485 1,1 %A A226485 _Mihir Mathur_, Jun 09 2013