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A027829
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Palindromic squares with an even number of digits.
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1
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698896, 637832238736, 4099923883299904, 6916103777337773016196, 40460195511188111559106404, 4872133543202112023453312784, 9658137819052882509187318569, 46501623417708833880771432610564
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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REFERENCES
| C. Ashbacher, On palindromic squares, J. Rec. Math., 22 (No,2, 1990), 133-.
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LINKS
| K. S. Brown, On General Palindromic Numbers
P. De Geest, Palindromic Squares
P. De Geest, Subsets of Palindromic Squares
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CROSSREFS
| Cf. A016113.
Sequence in context: A114676 A205608 A205439 * A204496 A183835 A203834
Adjacent sequences: A027826 A027827 A027828 * A027830 A027831 A027832
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KEYWORD
| nonn,base
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AUTHOR
| Keith Devlin, via Boon Leong (boon_leong(AT)hotmail.com)
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EXTENSIONS
| 2 new terms were recently found by Bennett from UK (communication from Patrick De Geest (pdg(AT)worldofnumbers.com)).
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