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Search: id:A139704
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| A139704 |
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Nearly palindromic numbers: non-palindromes that can be made palindromic by inserting an extra digit. |
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+0
2
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| 10, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 78, 79, 80, 81, 82, 83, 84, 85
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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Digits may be inserted at the beginning, middle, or end. However, a zero may not be inserted at the beginning.
Differs from A043638: 110, 220, 330, 440, 550, 660, 770, 880, 990, 1100, 1110 etc. are in A043638 but not here. 1010, 1011, 1012, 1013 etc. are here but not in A043638. - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), May 31 2008
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EXAMPLE
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The first term 10 can be made palindromic by adding 1 to the end of it to form 101.
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CROSSREFS
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Cf. A002113, A139705, A043638.
Sequence in context: A031166 A098732 A109394 this_sequence A139819 A031955 A029742
Adjacent sequences: A139701 A139702 A139703 this_sequence A139705 A139706 A139707
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KEYWORD
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easy,nonn,base
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AUTHOR
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Jono Henshaw (jjono(AT)hotmail.com), Apr 30 2008
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