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A048354
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a(n)^2 is the smallest square containing exactly n 9's.
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2
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3, 63, 173, 1414, 17313, 53937, 138923, 953937, 3082207, 31622764, 99849687, 301579177, 3033150173, 14142134563, 141413973847, 543315746063, 3098361825223, 5477225574409, 14139412282687
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OFFSET
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1,1
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COMMENTS
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LINKS
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MATHEMATICA
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a[n_]:=Module[{i}, i=1; While[DigitCount[i^2][[9]]!=n, i++ ]; i]; (* Sam Handler (sam_5_5_5_0(AT)yahoo.com), Aug 23 2006 *)
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CROSSREFS
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KEYWORD
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nonn,base,more
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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