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A030484
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Squares composed of digits {2,5,6}.
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3
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25, 225, 256, 625, 5625, 55225, 225625, 265225, 266256, 525625, 26265625, 56625625, 525555625, 556252225, 5252625625, 255555525625, 265652622225, 6255626265625, 225255552522256, 562222665225225, 5222566262655625
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OFFSET
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1,1
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COMMENTS
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Each term is either 25 or 56 mod 100 (which is used in the Mathematica program below to improve the search speed). - Harvey P. Dale, Jul 02 2016
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LINKS
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MATHEMATICA
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Select[Flatten[Table[{FromDigits/@(Join[#, {2, 5}]&/@Tuples[{2, 5, 6}, n]), FromDigits/@ (Join[#, {5, 6}]&/@Tuples[{2, 5, 6}, n])}, {n, 0, 14}]], IntegerQ[ Sqrt[#]]&]//Sort (* Harvey P. Dale, Jul 02 2016 *)
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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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Extended and corrected by author 03/2000.
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STATUS
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approved
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