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A077491
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a(n) = smallest k such that 2k has digit sum = n.
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2
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5, 1, 6, 2, 7, 3, 8, 4, 9, 14, 19, 24, 29, 34, 39, 44, 49, 99, 149, 199, 249, 299, 349, 399, 449, 499, 999, 1499, 1999, 2499, 2999, 3499, 3999, 4499, 4999, 9999, 14999, 19999, 24999, 29999, 34999, 39999, 44999, 49999, 99999, 149999, 199999, 249999, 299999
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OFFSET
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1,1
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LINKS
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Index entries for linear recurrences with constant coefficients, signature (1,0,0,0,0,0,0,0,10,-10).
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FORMULA
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CROSSREFS
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KEYWORD
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base,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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