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 A195371 #10 Dec 24 2017 09:25:37 %S A195371 9,6,4,7,2,3,8,1,9,5,8,9,9,1,6,9,5,0,6,0,4,4,0,4,6,4,9,5,0,3,8,0,6,6, %T A195371 8,6,6,0,3,7,2,4,3,9,4,7,2,0,2,7,7,9,4,4,7,4,3,9,8,7,1,7,0,7,3,9,7,7, %U A195371 2,1,0,1,0,0,4,7,9,2,0,1,2,3,1,0,5,2,8,1,0,1,2,2,3,0,0,1,3,3,7,9 %N A195371 Decimal expansion of shortest length, (C), of segment from side CA through incenter to side CB in right triangle ABC with sidelengths (a,b,c)=(1,sqrt(2),sqrt(3)). %C A195371 See A195284 for definitions and a general discussion. %H A195371 G. C. Greubel, <a href="/A195371/b195371.txt">Table of n, a(n) for n = 0..10000</a> %e A195371 (C)=0.96472381958991695060440464950380668660... %t A195371 a = 1; b = Sqrt[2]; c = Sqrt[3]; %t A195371 f = 2 a*b/(a + b + c); %t A195371 x1 = Simplify[f*Sqrt[a^2 + (b + c)^2]/(b + c) ] %t A195371 x2 = Simplify[f*Sqrt[b^2 + (c + a)^2]/(c + a) ] %t A195371 x3 = f*Sqrt[2] %t A195371 N[x1, 100] %t A195371 RealDigits[%] (* (A) A195369 *) %t A195371 N[x2, 100] %t A195371 RealDigits[%] (* (B) A195370 *) %t A195371 N[x3, 100] %t A195371 RealDigits[%] (* (C) A195371 *) %t A195371 N[(x1 + x2 + x3)/(a + b + c), 100] %t A195371 RealDigits[%] (* Philo(ABC,I) A195372 *) %Y A195371 Cf. A195284, A195369, A195370, A195372. %K A195371 nonn,cons %O A195371 0,1 %A A195371 _Clark Kimberling_, Sep 17 2011