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

1,1

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.

Example

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

Crossrefs

Cf. A066531.

Sequence in context: A167233 A187399 A102335 * A147749 A175753 A251472

Adjacent sequences: A083402 A083403 A083404 * A083406 A083407 A083408

Keyword

nonn,base

Author

Shyam Sunder Gupta, Jun 07 2003

Extensions

More terms from Hans Havermann, Feb 11 2012

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

Status

approved