A195387 Decimal expansion of shortest length, (B), of segment from side BC through incenter to side BA in right triangle ABC with sidelengths (a,b,c)=(sqrt(2),sqrt(5),sqrt(7)).

1, 1, 4, 6, 8, 0, 9, 7, 5, 9, 1, 5, 8, 1, 9, 1, 6, 3, 0, 9, 5, 3, 7, 7, 6, 0, 0, 6, 5, 1, 9, 6, 8, 1, 6, 0, 7, 5, 5, 6, 7, 6, 8, 2, 9, 7, 3, 5, 9, 7, 5, 1, 3, 7, 2, 7, 2, 9, 8, 2, 4, 8, 5, 3, 3, 1, 7, 8, 9, 4, 6, 4, 4, 3, 9, 9, 1, 8, 6, 0, 9, 3, 6, 7, 6, 2, 0, 5, 1, 5, 2, 1, 5, 4, 4, 9, 5, 5, 0, 7

Offset: 1

Author

Clark Kimberling, Sep 17 2011

Keywords

• nonn
• cons

Comments

See A195284 for definitions and a general discussion.

Examples

			(B)=1.1468097591581916309537760065196816075567682...
		

Links

• G. C. Greubel, Table of n, a(n) for n = 1..10000

Crossrefs

Cf. A195284, A195386, A195388, A195389.

Programs

Mathematica

a = Sqrt[2]; b = Sqrt[5]; c = Sqrt[7];
f = 2 a*b/(a + b + c);
x1 = Simplify[f*Sqrt[a^2 + (b + c)^2]/(b + c) ]
x2 = Simplify[f*Sqrt[b^2 + (c + a)^2]/(c + a) ]
x3 = f*Sqrt[2]
N[x1, 100]
RealDigits[%]   (* (A) A195386 *)
N[x2, 100]
RealDigits[%]   (* (A) A195387 *)
N[x3, 100]
RealDigits[%]   (* (A) A195388 *)
N[(x1 + x2 + x3)/(a + b + c), 100]
RealDigits[%]   (* Philo(ABC,I) A195389 *)