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A146484
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Decimal expansion of Product_{q in A014613} (1-1/(q*(q-1))).
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1
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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; internal format)
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OFFSET
| 0,1
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COMMENTS
| 4-almost prime analog of A005596.
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FORMULA
| The logarithm is -sum_{s>=2} sum_{j=1..floor[s/(1+r)]} binomial(s-r*j-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.
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EXAMPLE
| 0.989628867166427665504.. = (1-1/240)*(1-1/552)*...
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CROSSREFS
| Sequence in context: A201994 A200003 A159590 * A116695 A109940 A010549
Adjacent sequences: A146481 A146482 A146483 * A146485 A146486 A146487
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KEYWORD
| nonn,cons,less
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AUTHOR
| R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Feb 13 2009
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