A146484 - OEIS

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A146484

Decimal expansion of Product_{q in A014613} (1-1/(q*(q-1))).

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

	OFFSET	`0,1`
	COMMENTS	`4-almost prime analog of A005596.`
	LINKS	`Table of n, a(n) for n=0..56.`
	FORMULA	`The logarithm is -sum_{s>=2} sum_{j=1..floor[s/(1+r)]} binomial(s-rj-1,j-1)P_4(s)/j at r=1, where P_k(s) are the k-almost prime zeta functions of arXiv:0803.0900.`
	EXAMPLE	`0.989628867166427665504.. = (1-1/240)(1-1/552)...`
	CROSSREFS	`Sequence in context: A201994 A200003 A159590 * A116695 A109940 A010549` `Adjacent sequences: A146481 A146482 A146483 * A146485 A146486 A146487`
	KEYWORD	`nonn,cons,less`
	AUTHOR	`R. J. Mathar, Feb 13 2009`
	STATUS	`approved`

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Last modified June 19 00:30 EDT 2013. Contains 226357 sequences.