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.

A195344 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)=(1,3,sqrt(10)).

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%I A195344 #5 Mar 30 2012 18:57:45
%S A195344 8,4,8,6,8,0,9,6,8,7,9,3,4,1,5,9,6,8,1,3,0,9,8,9,7,4,8,3,0,2,9,8,5,1,
%T A195344 5,9,3,8,1,8,4,6,1,8,5,1,2,0,2,0,1,5,9,0,5,2,1,4,8,4,9,1,9,7,6,6,5,2,
%U A195344 5,4,9,2,3,5,6,3,9,4,4,0,4,6,2,4,5,2,5,0,3,4,5,3,0,8,9,5,4,3,8,7
%N A195344 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)=(1,3,sqrt(10)).
%C A195344 See A195284 for definitions and a general discussion.
%e A195344 (A)=0.84868096879341596813098974830298515938184618...
%t A195344 a = 1; b = 3; c = Sqrt[10]; f = 2 a*b/(a + b + c);
%t A195344 x1 = Simplify[f*Sqrt[a^2 + (b + c)^2]/(b + c) ]
%t A195344 x2 = Simplify[f*Sqrt[b^2 + (c + a)^2]/(c + a) ]
%t A195344 x3 = f*Sqrt[2]
%t A195344 N[x1, 100]
%t A195344 RealDigits[%]  (* A195344 *)
%t A195344 N[x2, 100]
%t A195344 RealDigits[%] (* A195345 *)
%t A195344 N[x3, 100]
%t A195344 RealDigits[%] (* A195346 *)
%t A195344 N[(x1 + x2 + x3)/(a + b + c), 100]
%t A195344 RealDigits[%] (* A195347 *)
%Y A195344 Cf. A195284, A195345, A195346, A195347.
%K A195344 nonn,cons
%O A195344 0,1
%A A195344 _Clark Kimberling_, Sep 16 2011