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Decimal expansion of (4K/Pi)^2 where K is the Landau-Ramanujan constant.

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9, 4, 6, 8, 0, 6, 4, 0, 7, 1, 8, 0, 0, 7, 9, 3, 3, 4, 2, 1, 6, 0, 9, 4, 4, 1, 3, 1, 0, 9, 7, 5, 6, 2, 3, 3, 2, 5, 0, 0, 6, 9, 5, 0, 2, 6, 4, 7, 1, 6, 5, 3, 1, 2, 1, 8, 1, 9, 7, 9, 5, 6, 5, 5, 3, 5, 8, 2, 0, 1, 0, 6, 6, 3, 9, 3, 6, 3, 7, 9, 2, 8, 1, 3, 9, 8, 9, 1, 3, 3, 0, 0, 4, 9, 9, 6, 2, 6, 0, 5, 2, 3, 4, 3 (list; cons; graph; listen)

	OFFSET	`0,1`
	REFERENCES	`S. R. Finch, Mathematical Constants, Encyclopedia of Mathematics and its Applications, vol. 94, Cambridge University Press, p. 100` `W. Bosma and P. Stevenhagen, Density computations for real quadratic units, Math. comp. 65 (1996), 1327-1337; MR 96j : 11171`
	FORMULA	`(4K/Pi)^2=prod(1-1/p^2) where p runs through the primes p==1 mod 4`
	EXAMPLE	`0.9468064071800793342160944131097562332500695...`
	CROSSREFS	`Cf. A064533.` `Sequence in context: A086240 A153756 A139720 this_sequence A131109 A154397 A116186` `Adjacent sequences: A088536 A088537 A088538 this_sequence A088540 A088541 A088542`
	KEYWORD	`cons,nonn`
	AUTHOR	`Benoit Cloitre (benoit7848c(AT)orange.fr), Nov 16 2003`

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Last modified November 27 22:38 EST 2009. Contains 167602 sequences.

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