A083407 Odd squares which can be expressed as the product of a number and its reversal in at least two different ways.

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

Offset: 1

Author

Shyam Sunder Gupta, Jun 07 2003

Keywords

• nonn
• base
• changed

Examples

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

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.

Crossrefs

Cf. A066531, A083406 (even squares version), A083408 (all squares version).

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