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A057649
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Nearest integer to ratio of volume of n-dimensional cube of side 2 to volume of n-dimensional ball of radius 1.
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1
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1, 1, 1, 2, 3, 6, 12, 27, 63, 155, 402, 1087, 3068, 8996, 27340, 85905, 278485, 929713, 3191201, 11245603, 40631628, 150342633, 569071745, 2201355134, 8694775795, 35035655103, 143916920872, 602218550964, 2565370007349, 11118142868084, 48994958103507
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OFFSET
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0,4
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REFERENCES
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J. H. Conway and N. J. A. Sloane, "Sphere Packings, Lattices and Groups", Springer-Verlag, p. 9.
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LINKS
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FORMULA
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a(n) = 2^n*GAMMA(n/2+1)/Pi^(n/2).
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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