A093588 Decimal expansion of -1/8 + 4/Pi^2.

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

Offset

0,1

Comments

Probability that a triangle picked at random in a unit disk is acute.

References

Clifford A. Pickover, The Math Book, From Pythagoras to the 57th Dimension, 250 Milestones in the History of Mathematics, Sterling Publ., NY, 2009, page 476.

Links

Table of n, a(n) for n=0..99.

Eric Weisstein's World of Mathematics, Disk Triangle Picking

Index entries for transcendental numbers

Example

0.280284734...

Mathematica

RealDigits[ 4/Pi^2 - 1/8, 10, 105][[1]]

Prog

(PARI) 4/Pi^2 - 1/8 \\ Charles R Greathouse IV, Oct 01 2022

Crossrefs

Sequence in context: A259173 A010594 A370944 * A378977 A369499 A016593

Adjacent sequences: A093585 A093586 A093587 * A093589 A093590 A093591

Keyword

nonn,cons

Author

Eric W. Weisstein, Apr 01 2004

Extensions

a(99) corrected by Georg Fischer, Apr 04 2020

Status

approved