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S. S. Gupta (see link): "EPRNs (Equal Product of Reversible Numbers) are defined as the numbers which can be expressed as the product of two reversible numbers in (at least) two different ways".
a(n)^2 = A083408(k) for some k.
Hans Havermann, Table of n, a(n) for n = 1..54
Shyam Sunder Gupta, EPRNs
27972 is in the sequence because 782432784 = 27972*27972 = 15984*48951.
1113111 is in the sequence because 1239016098321 = 1113111*1113111 = 1022121*1212201.
Cf. A066531, A083408 (square EPRNs), A206642.
Sequence in context: A154073 A166783 A104679 * A152466 A004535 A027815
Adjacent sequences: A117278 A117279 A117280 * A117282 A117283 A117284
Lekraj Beedassy, Apr 23 2006
Edited and corrected by Klaus Brockhaus, Aug 21 2007