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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 (list; graph; refs; listen; history; text; internal format)
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

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Last modified May 16 21:29 EDT 2022. Contains 353720 sequences. (Running on oeis4.)