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A101687
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a(n) = Sum_{k=1..n} floor(binomial(n,k)/k).
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2
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0, 1, 2, 4, 8, 14, 23, 41, 73, 131, 232, 418, 758, 1388, 2558, 4742, 8837, 16547, 31111, 58705, 111133, 210996, 401645, 766367, 1465416, 2807595, 5388705, 10359733, 19946714, 38459504, 74250895, 143524561, 277742291, 538043338, 1043333607, 2025040417, 3933914770
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OFFSET
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0,3
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LINKS
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MATHEMATICA
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Table[Sum[Floor[Binomial[n, k]/k], {k, n}], {n, 40}] (* Harvey P. Dale, Nov 14 2021 *)
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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