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Search: id:A068065
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| A068065 |
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Palindromes n for which there is a unique k such that n = k + reverse(k). |
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+0
3
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| 0, 2, 4, 6, 8, 11, 101, 141, 161, 181, 1001, 10001, 10201, 10401, 10601, 10801, 100001, 1000001, 1002001, 1004001, 1006001, 1008001, 10000001, 100000001, 100020001, 100040001, 100060001, 100080001, 1000000001, 10000000001
(list; graph; listen)
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OFFSET
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1,2
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COMMENT
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Subsequence of A068062; A068062(k) is in this sequence if and only if A068064(k) = 1. At first sight, 121 seems to be missing, but in fact 121 does not belong here (cf. example in A068064).
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EXAMPLE
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10601 is in the sequence, since 10601 = 10300 + 00301 and for no other k we have 10601 = k + reverse(k).
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CROSSREFS
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Cf. A002113, A067030, A067032, A068062, A068064.
Sequence in context: A088169 A061563 A099994 this_sequence A028328 A092990 A103829
Adjacent sequences: A068062 A068063 A068064 this_sequence A068066 A068067 A068068
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KEYWORD
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base,nonn
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AUTHOR
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Klaus Brockhaus (klaus-brockhaus(AT)t-online.de), Feb 16 2002
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