cp's OEIS Frontend

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.

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)).

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%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