A083405 Odd numbers which can be expressed as the product of a number and its reversal in at least two different ways.

12494209, 448583733, 494167063, 547084993, 851529915, 1191394449, 1213031209, 1338416599, 1343524977, 1464607989, 2064820905, 34509780333, 36738861453, 38016529663, 39118059873, 40127419683, 42087533593, 43093084603, 43754503723, 43948961613

Offset: 1

Author

Shyam Sunder Gupta, Jun 07 2003

Keywords

• nonn
• base

Examples

			12494209 = 13143 * 34131 = 31341 * 14313, 1191394449 = 12369 * 96321 = 30783 * 38707, etc.
		

References

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

Links

• Hans Havermann, Table of n, a(n) for n = 1..343
• Shyam Sunder Gupta, EPRN Numbers.

Crossrefs

Cf. A066531.

Extensions

More terms from Hans Havermann, Feb 11 2012

Definition corrected by N. J. A. Sloane, Aug 01 2019