

A083407


Odd squares which can be expressed as the product of a number and its reversal in at least two different ways.


5



1239016098321, 1503617940841, 1842890415961, 11151144884889, 12909311260209, 149920947896841, 181937770841761, 12128839583882121, 12598313930168521, 12639203218972521, 13081277143774921, 14462953695004441, 14999934809556841, 15260975534573041
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OFFSET

1,1


REFERENCES

S. S. Gupta, EPRNs, Science Today, Feb. 1987, India.


LINKS

Chai Wah Wu, Table of n, a(n) for n = 1..126
Shyam Sunder Gupta, EPRN Numbers.


EXAMPLE

1239016098321 = 1113111 * 1113111 = 1022121 * 1212201, etc.


CROSSREFS

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


KEYWORD

nonn,base


AUTHOR

Shyam Sunder Gupta, Jun 07 2003


EXTENSIONS

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


STATUS

approved



