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A083407
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Odd squares which can be expressed as the product of a number and its reversal in at least two different ways.
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5
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1239016098321, 1503617940841, 1842890415961, 11151144884889, 12909311260209, 149920947896841, 181937770841761, 12128839583882121, 12598313930168521, 12639203218972521, 13081277143774921, 14462953695004441, 14999934809556841, 15260975534573041
(list;
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history;
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OFFSET
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1,1
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REFERENCES
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S. S. Gupta, EPRNs, Science Today, Feb. 1987, India.
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LINKS
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Chai Wah Wu, Table of n, a(n) for n = 1..126
Shyam Sunder Gupta, EPRN Numbers.
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EXAMPLE
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1239016098321 = 1113111 * 1113111 = 1022121 * 1212201, etc.
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CROSSREFS
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Cf. A066531, A083406 (even squares version), A083408 (all squares version).
Sequence in context: A271447 A060088 A077300 * A287262 A260250 A088280
Adjacent sequences: A083404 A083405 A083406 * A083408 A083409 A083410
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KEYWORD
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nonn,base
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AUTHOR
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Shyam Sunder Gupta, Jun 07 2003
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EXTENSIONS
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Corrected by Hans Havermann, Feb 13 2012
a(4)-a(14) (including four found by Hans Havermann) from Donovan Johnson, Feb 18 2012
Definition corrected by N. J. A. Sloane, Aug 01 2019
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STATUS
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approved
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