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A117281
Palindromes whose squares belong to A066531.
8
252, 2772, 20502, 23632, 25452, 26962, 27972, 48384, 225522, 252252, 259952, 279972, 619916, 1113111, 1226221, 1357531, 2005002, 2070702, 2126212, 2150512, 2216122, 2226222, 2249422, 2275722, 2316132, 2347432, 2386832, 2429242
OFFSET
1,1
COMMENTS
a(n)^2 = A083408(k) for some k.
LINKS
Chai Wah Wu, Table of n, a(n) for n = 1..4679 (n = 1..54 from Hans Havermann)
Shyam Sunder Gupta, EPRNs
EXAMPLE
27972 is in the sequence because 782432784 = 27972*27972 = 15984*48951.
1113111 is in the sequence because 1239016098321 = 1113111*1113111 = 1022121*1212201.
CROSSREFS
Cf. A066531, A083408 (square EPRNs), A206642.
Sequence in context: A154073 A166783 A104679 * A152466 A004535 A027815
KEYWORD
nonn,base
AUTHOR
Lekraj Beedassy, Apr 23 2006
EXTENSIONS
Edited and corrected by Klaus Brockhaus, Aug 21 2007
Edited by N. J. A. Sloane, Aug 01 2019
STATUS
approved