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Search: id:A079059
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| A079059 |
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Decimal expansion of product( p == 3 (mod 4), sqrt(1-p^-2)). |
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+0
1
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OFFSET
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1,2
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REFERENCES
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E. Landau, "Handbuch der Lehre von der Verteilung der Primzahlen", vol. 2, Teubner, Leipzig; third edition: Chelsea, New York (1974), pp. 641-669
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LINKS
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E. Landau, Handbuch der Lehre von der Verteilung der Primzahlen, vol. 2, Leipzig, Berlin, B. G. Teubner, 1909.
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FORMULA
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product( p == 3 (mod 4), sqrt(1-p^-2))=0.92526...
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PROGRAM
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(PARI) prod(k=1, 40000, if(prime(k)%4-3, 1, sqrt(1-prime(k)^-2)))
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CROSSREFS
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Cf. A071903.
Sequence in context: A020784 A111188 A089065 this_sequence A082831 A085551 A021112
Adjacent sequences: A079056 A079057 A079058 this_sequence A079060 A079061 A079062
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KEYWORD
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cons,more,nonn
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AUTHOR
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Benoit Cloitre (benoit7848c(AT)orange.fr), Feb 02 2003
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