A195368 Decimal expansion of normalized Philo sum, Philo(ABC,I), where I=incenter of a sqrt(2),sqrt(3),sqrt(5) right triangle ABC.

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

Offset: 0

Author

Clark Kimberling, Sep 16 2011

Keywords

• nonn
• cons

Comments

See A195284 for definitions and a general discussion.

Examples

			Philo(ABC,I)=0.6058618423612399338566241911182750750678...
		

Links

• G. C. Greubel, Table of n, a(n) for n = 0..10000

Crossrefs

Cf. A195284.

Programs

Mathematica

a = Sqrt[2]; b = Sqrt[3]; c = Sqrt[5];
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) A195365 *)
N[x2, 100]
RealDigits[%]    (* (B) A195366 *)
N[x3, 100]
RealDigits[%]    (* (C) A195367 *)
N[(x1 + x2 + x3)/(a + b + c), 100]
RealDigits[%]    (* Philo(ABC,I) A195368 *)