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A161902
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Non-palindromic squares whose digit reversal gives a square (possibly with fewer digits).
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1
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100, 144, 169, 400, 441, 900, 961, 1089, 9801, 10000, 10404, 10609, 12100, 12544, 12769, 14400, 14884, 16900, 40000, 40401, 44100, 44521, 48400, 48841, 67600, 90000, 90601, 96100, 96721, 108900, 980100, 1000000, 1004004, 1006009, 1020100, 1022121, 1024144, 1026169, 1040400, 1042441
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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MATHEMATICA
| rsQ[n_]:=Module[{idn=IntegerDigits[n], ridn}, ridn=Reverse[idn]; ridn!=idn&&IntegerQ[Sqrt[FromDigits[ridn]]]]; Select[Range[2000]^2, rsQ] [From Harvey P. Dale, Feb 02 2011]
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CROSSREFS
| Sequence in context: A108551 A096598 A070760 * A153673 A004262 A004263
Adjacent sequences: A161899 A161900 A161901 * A161903 A161904 A161905
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KEYWORD
| base,nonn
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com), Jan 30 2011
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EXTENSIONS
| More terms from Harvey P. Dale, Feb. 2, 2011
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