A120671 - OEIS

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A120671

Decimal expansion of arccos(1-8/(Pi^2)) / (2*Pi).

2, 1, 9, 6, 6, 7, 9, 0, 9, 7, 1, 0, 0, 5, 6, 6, 4, 1, 1, 8, 1, 6, 6, 1, 1, 9, 7, 5, 5, 0, 1, 4, 5, 1, 6, 4, 6, 0, 9, 3, 9, 4, 7, 7, 4, 0, 2, 9, 4, 3, 1, 8, 6, 4, 2, 5, 5, 7, 1, 2, 4, 4, 1, 6, 7, 4, 0, 0, 1, 1, 5, 1, 5, 0, 4, 6, 4, 6, 1, 5, 8, 5, 0, 7, 7, 6, 1, 7, 7, 5, 1, 9, 1, 8, 6, 5, 4, 2, 1, 5, 4, 8, 2, 5, 3 (list; constant; graph; refs; listen; history; text; internal format)

	OFFSET	`0,1`
	COMMENTS	`The average arc length between two randomly chosen points on a circle of radius r is rA120669 corresponding to the average chord length rA088538. (Each arc averaged is no larger than the semicircle.). This sequence is the ratio of that average arc length to the circumference (and is thus also the ratio of the corresponding sector's area to the circle's area).`
	LINKS	`Table of n, a(n) for n=0..104.`
	FORMULA	`a(n) = A120669/(2*Pi) = A120670/360.`
	EXAMPLE	`0.219667909710056641181661197550...`
	PROG	`(PARI) acos(1-8/Pi^2)/(2*Pi)`
	CROSSREFS	`Cf. A088538, A120669 (2PiA120671), A120670 (360A120671).` `Sequence in context: A061356 A141028 A201685 A086572 A016632 A176400` `Adjacent sequences: A120668 A120669 A120670 * A120672 A120673 A120674`
	KEYWORD	`cons,nonn`
	AUTHOR	`Rick L. Shepherd, Jun 22 2006`
	STATUS	`approved`

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Last modified May 21 16:16 EDT 2013. Contains 225504 sequences.