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.

A195395 Decimal expansion of shortest length, (A), of segment from side AB through incenter to side AC in right triangle ABC with sidelengths (a,b,c)=(sqrt(3),sqrt(5),sqrt(8)).

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%I A195395 #6 Mar 30 2012 18:57:45
%S A195395 1,2,0,4,4,9,9,9,5,2,4,3,8,3,0,0,4,2,2,9,6,2,6,7,7,2,0,4,9,5,5,8,8,0,
%T A195395 4,2,5,3,7,2,4,9,9,8,3,8,1,4,3,2,7,9,8,3,2,8,9,2,3,7,3,3,6,2,4,6,2,0,
%U A195395 5,8,0,7,9,0,1,7,0,6,1,9,5,8,9,3,3,1,3,9,8,9,3,0,0,9,4,1,9,1,5,1
%N A195395 Decimal expansion of shortest length, (A), of segment from side AB through incenter to side AC in right triangle ABC with sidelengths (a,b,c)=(sqrt(3),sqrt(5),sqrt(8)).
%C A195395 See A195284 for definitions and a general discussion.
%e A195395 (A)=1.204499952438300422962677204955880425372499...
%t A195395 a = Sqrt[3]; b = Sqrt[5]; c = Sqrt[8];
%t A195395 f = 2 a*b/(a + b + c);
%t A195395 x1 = Simplify[f*Sqrt[a^2 + (b + c)^2]/(b + c) ]
%t A195395 x2 = Simplify[f*Sqrt[b^2 + (c + a)^2]/(c + a) ]
%t A195395 x3 = f*Sqrt[2]
%t A195395 N[x1, 100]
%t A195395 RealDigits[%]    (* (A) A195395 *)
%t A195395 N[x2, 100]
%t A195395 RealDigits[%]    (* (B) A195396 *)
%t A195395 N[x3, 100]
%t A195395 RealDigits[%]    (* (C) A195397 *)
%t A195395 N[(x1 + x2 + x3)/(a + b + c), 100]
%t A195395 RealDigits[%]    (*  Philo(ABC,I) A195398 *)
%Y A195395 Cf. A195284, A195896, A195897, A195398.
%K A195395 nonn,cons
%O A195395 1,2
%A A195395 _Clark Kimberling_, Sep 17 2011