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A061259
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a(n)=Sum_{d|n} d*numbpart(d), where numbpart(d)=number of partitions of d, cf. A000041.
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3
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1, 5, 10, 25, 36, 80, 106, 201, 280, 460, 617, 1024, 1314, 2000, 2685, 3897, 5050, 7280, 9311, 13020, 16747, 22665, 28866, 39000, 48986, 64654, 81550, 106124, 132386, 171295, 212103, 271065, 335345, 423594, 521046, 655396, 800570, 997885
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OFFSET
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1,2
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LINKS
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PROG
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(Haskell)
a061259 n = sum $ zipWith (*) divs $ map a000041 divs
where divs = a027750_row' n
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CROSSREFS
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KEYWORD
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easy,nonn
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AUTHOR
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STATUS
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approved
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