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A211705
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Decimal expansion of Sum_{n>=1} A006218(n)*2^(-n).
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8
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3, 2, 1, 3, 3, 9, 0, 3, 0, 4, 8, 3, 0, 5, 8, 3, 5, 2, 7, 5, 6, 6, 6, 0, 3, 0, 4, 6, 3, 8, 1, 8, 4, 9, 1, 6, 0, 9, 6, 1, 1, 5, 9, 3, 4, 3, 0, 1, 1, 5, 1, 2, 8, 7, 1, 5, 5, 6, 1, 5, 9, 1, 0, 7, 3, 8, 2, 8, 3, 6, 8, 4, 1, 4, 8, 6, 9, 7, 3, 3, 8, 1, 1, 3, 1, 4, 2
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OFFSET
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1,1
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LINKS
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FORMULA
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EXAMPLE
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Sum_{n>=1} A006218(n)*2^(-n) = 1/2 + 3/4 + 5/8 + 8/16 + 10/32 + 14/64 + ... = 3.213390304830583527566603046381849...
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MATHEMATICA
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f[n_, m_] := Sum[Floor[n/k], {k, 1, m}]
t = Table[f[n, 100], {n, 1, 4000}] ;
N[Sum[t[[n]]/2^n, {n, 1, 4000}], 100]
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PROG
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CROSSREFS
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KEYWORD
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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