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A083405 Odd numbers which can be expressed as the product of a number and its reversal in at least two different ways. 1
12494209, 448583733, 494167063, 547084993, 851529915, 1191394449, 1213031209, 1338416599, 1343524977, 1464607989, 2064820905, 34509780333, 36738861453, 38016529663, 39118059873, 40127419683, 42087533593, 43093084603, 43754503723, 43948961613 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
REFERENCES
S. S. Gupta, EPRNs, Science Today, Feb. 1987, India.
LINKS
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
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

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Last modified April 20 11:10 EDT 2024. Contains 371838 sequences. (Running on oeis4.)