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A070760 Numbers n such that n*rev(n) is a square different from n^2, where rev=A004086, decimal reversal. +0
1
100, 144, 169, 200, 288, 300, 400, 441, 500, 528, 600, 700, 768, 800, 825, 867, 882, 900, 961, 1089, 1100, 1584, 2178, 2200, 3300, 4400, 4851, 5500, 6600, 7700, 8712, 8800, 9801, 9900, 10000, 10100, 10404, 10609, 10989 (list; graph; listen)
OFFSET

1,1

EXAMPLE

a(2)=144: rev(144)=441, 144*441=(12^2)*(21^2)=(12*21)^2 and 144<>12*21=252.

CROSSREFS

Cf. A061205, A002113.

Sequence in context: A045211 A108551 A096598 this_sequence A153673 A004262 A004263

Adjacent sequences: A070757 A070758 A070759 this_sequence A070761 A070762 A070763

KEYWORD

nonn,nice,base

AUTHOR

Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), May 15 2002

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.


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