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Search: id:A121233
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| A121233 |
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Palindromes whose ten's complements are squares. |
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+0
1
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| 1, 6, 9, 99, 424, 676, 919, 999, 4224, 5775, 9559, 9999, 57975, 63136, 91719, 93439, 99999, 951159, 999999, 1196911, 4402044, 6359536, 6944496, 9173719, 9329239, 9959599, 9977799, 9999999, 67144176, 99188199, 99999999, 577080775, 915525519
(list; graph; listen)
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OFFSET
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1,2
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COMMENT
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Known primes occuring in the sequence are 919, 1196911, 9173719, and 9329239.
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EXAMPLE
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424 is a term because it's palindromic and 10^3-424 = 576 = 24^2.
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CROSSREFS
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Adjacent sequences: A121230 A121231 A121232 this_sequence A121234 A121235 A121236
Sequence in context: A046498 A119738 A103107 this_sequence A053490 A061110 A110460
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KEYWORD
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base,nonn
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AUTHOR
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Jason Earls (zevi_35711(AT)yahoo.com), Aug 21 2006
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EXTENSIONS
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More terms from R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Sep 02 2006
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