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A054035
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Numbers n such that n^2 contains exactly 7 different digits.
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10
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1017, 1023, 1024, 1027, 1028, 1036, 1037, 1042, 1113, 1117, 1164, 1175, 1176, 1197, 1228, 1267, 1268, 1277, 1302, 1307, 1323, 1328, 1343, 1352, 1355, 1375, 1395, 1405, 1428, 1433, 1441, 1442, 1444, 1463, 1541, 1593, 1594, 1628, 1646, 1648, 1701, 1706
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OFFSET
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1,1
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LINKS
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MAPLE
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f := []; for i from 0 to 200 do if nops({op(convert(i^2, base, 10))})=7 then f := [op(f), i] fi; od; f;
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MATHEMATICA
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Select[Range[2000], Count[DigitCount[#^2], 0]==3&] (* Harvey P. Dale, Jul 28 2012 *)
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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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STATUS
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approved
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