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A007936
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Some permutation of digits is a square.
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2
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1, 4, 9, 10, 16, 18, 25, 36, 40, 46, 49, 52, 61, 63, 64, 81, 90, 94, 100, 106, 108, 112, 121, 136, 144, 148, 160, 163, 169, 180, 184, 196, 205, 211, 225, 234, 243, 250, 252, 256, 259, 265, 279, 289, 295, 297, 298, 306, 316, 324, 342, 360, 361, 400, 406, 409, 414
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,2
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REFERENCES
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M. Le, On Smarandache Pseudo-Powers of Third Kind, Smarandache Notions Journal, Vol. 10, No. 1-2-3, 1999, 150-151.
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LINKS
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MATHEMATICA
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Select[Range[500], Length[Select[FromDigits/@Permutations[ IntegerDigits[#]], IntegerQ[Sqrt[#]]&]]>0&] (* Harvey P. Dale, Mar 30 2011 *)
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CROSSREFS
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Cf. A235993 (leading zeros not allowed).
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KEYWORD
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nonn,base,easy
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AUTHOR
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R. Muller
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STATUS
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approved
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