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A048346
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a(n)^2 is the smallest square containing exactly n 1's in its decimal notation.
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1
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0, 1, 11, 109, 1054, 3381, 10541, 105414, 414139, 1055041, 10252371, 78173596, 334082481, 1187901979, 1055036071, 33333407869, 105409293239, 718412219489, 1054501356619, 10536182856619
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OFFSET
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0,3
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COMMENTS
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LINKS
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MATHEMATICA
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a[n_] := Block[{k=0}, While[DigitCount[k^2, 10, 1] != n, k++]; k]; Array[a, 8, 0] (* Giovanni Resta, Jul 27 2018 *)
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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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