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A131470
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a(n)=smallest number that gives a product with the sum of digits of n written in base 2 greater than n.
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1
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2, 3, 2, 5, 3, 4, 3, 9, 5, 6, 4, 7, 5, 5, 4, 17, 9, 10, 7, 11, 8, 8, 6, 13, 9, 9, 7, 10, 8, 8, 7, 33, 17, 18, 12, 19, 13, 13, 10, 21, 14, 15, 11, 15, 12, 12, 10, 25, 17, 17, 13, 18, 14, 14, 12, 19, 15, 15, 12, 16, 13, 13, 11, 65, 33, 34, 23
(list; graph; refs; listen; history; internal format)
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