A394809 Decimal expansion of 12/Pi - Pi.

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

Offset

0,1

Comments

The mean area of a spherical triangle formed by 3 points independently and uniformly selected at random on the unit hemisphere (Santaló, 2004).

References

Luis A. Santaló, Integral Geometry and Geometric Probability, 2nd ed., Cambridge University Press, 2004, p. 313, note 8.

Links

Table of n, a(n) for n=0..105.

Index entries for transcendental numbers.

Formula

Equals A132702 - A000796.

Example

0.678125980615694819990566937660841804629862098395848...

Mathematica

RealDigits[12/Pi - Pi, 10, 120][[1]]

Prog

(PARI) 12/Pi - Pi

Crossrefs

Cf. A000796, A132702.

Cf. A394808, A394810, A394811, A394812.

Sequence in context: A004495 A301863 A284362 * A229177 A113786 A004487

Adjacent sequences: A394806 A394807 A394808 * A394810 A394811 A394812

Keyword

nonn,cons

Author

Amiram Eldar, Apr 02 2026

Status

approved