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A083125
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a(1) = 1, then the smallest number not occurring earlier such that the product of a pair of successive terms is a palindrome.
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2
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1, 2, 3, 11, 4, 22, 28, 9, 19, 17, 16, 29, 8, 34, 88, 7, 23, 18, 14, 31, 154, 13, 38, 231, 12, 21, 25, 209, 42, 6, 37, 15, 35, 143, 49, 77, 26, 33, 47, 303, 57, 333, 64, 66, 32, 132, 48, 44, 53, 404, 58, 364, 111, 5, 101, 55, 91, 99, 46, 437, 92, 236, 107, 422, 56, 121, 45
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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COMMENTS
| Conjecture: except for multiples of 10, all natural numbers belong to this sequence. - Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), May 02 2003
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CROSSREFS
| Cf. A083126.
Cf. A083664.
Sequence in context: A073098 A046641 A083664 * A031335 A084743 A030391
Adjacent sequences: A083122 A083123 A083124 * A083126 A083127 A083128
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KEYWORD
| base,nonn
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AUTHOR
| Amarnath Murthy and Meenakshi Srikanth (amarnath_murthy(AT)yahoo.com), Apr 23 2003
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EXTENSIONS
| More terms from Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), May 02 2003
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