id:A120671 - OEIS Search Results

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A120671

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

+0
3

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; cons; graph; listen)

	OFFSET	`0,1`
	COMMENT	`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).`
	FORMULA	`a(n) = A120669/(2*Pi) = A120670/360.`
	EXAMPLE	`0.219667909710056641181661197550...`
	PROGRAM	`(PARI) acos(1-8/Pi^2)/(2*Pi)`
	CROSSREFS	`Cf. A088538, A120669 (2PiA120671), A120670 (360*A120671).` `Sequence in context: A061691 A061356 A141028 this_sequence A086572 A016632 A021459` `Adjacent sequences: A120668 A120669 A120670 this_sequence A120672 A120673 A120674`
	KEYWORD	`cons,nonn`
	AUTHOR	`Rick L. Shepherd (rshepherd2(AT)hotmail.com), Jun 22 2006`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

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