A301863 Decimal expansion of the probability of intersection of 2 random chords in a circle, where each chord is selected by 2 random points within the circle.

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

Offset: 1

Author

Amiram Eldar, Mar 28 2018

Keywords

• nonn
• cons

Examples

			0.67810680544962158338542317342198988238288749714861...
		

Links

• Herbert Solomon, Geometric Probability, SIAM, 1978, p. 153.

Crossrefs

Cf. A301862, A301864, A301865.

Programs

Mathematica

RealDigits[1/3 + 245/(72*Pi^2), 10, 100][[1]]

PARI

1/3 + 245/(72*Pi^2) \\ Altug Alkan, Mar 28 2018

Formula

1/3 + 245/(72*Pi^2)