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A073866
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a(n) is the smallest composite number with the sum of digits = the n-th composite number.
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1
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4, 6, 8, 9, 28, 39, 68, 69, 88, 99, 299, 399, 589, 699, 799, 899, 999, 2899, 3999, 5999, 6999, 7999, 9899, 9999, 29999
(list; graph; refs; listen; history; internal format)
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