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A036508
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Smallest square containing exactly n 1's.
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4
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1, 121, 11881, 1110916, 11431161, 111112681, 11112111396, 171511111321, 1113111511681, 105111111121641, 6111111111571216, 111611104111115361, 1411111111712116441, 1113101111111117041, 1111116080161111121161, 11111119101145491111121, 516116117111111111421121
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OFFSET
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1,2
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COMMENTS
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LINKS
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MATHEMATICA
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a[n_] := Block[{k=1}, While[DigitCount[k^2, 10, 1] != n, k++]; k^2]; Array[a, 7] (* Giovanni Resta, Jul 27 2018 *)
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CROSSREFS
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KEYWORD
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nonn,base
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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