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A036789
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a(n) = Sum_{i=0..n} floor((2*i + 2)/(n - i + 1)).
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1
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2, 5, 8, 12, 17, 20, 26, 31, 36, 41, 48, 52, 59, 66, 71, 76, 86, 89, 98, 105, 110, 117, 126, 132, 139, 146, 155, 160, 171, 174, 184, 193, 198, 207, 218, 221, 230, 239, 248, 254, 265, 270, 279, 290, 297, 302, 315, 320, 332, 339, 346, 355, 366
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OFFSET
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0,1
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COMMENTS
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Original name was "A022821[ j ] - j - 1."
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LINKS
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MAPLE
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MATHEMATICA
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Table[Sum[Floor[(2 i + 2)/(n - i + 1)], {i, 0, n}], {n, 0, 100}] (* Wesley Ivan Hurt, Jan 30 2016 *)
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CROSSREFS
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KEYWORD
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nonn,easy
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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