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Search: id:A086883
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| A086883 |
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Numbers n such that the decimal expansion of 1/n is nonterminating and contains arbitrarily long palindromic substrings. |
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1
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| 3, 6, 9, 11, 12, 15, 18, 22, 24, 30, 33, 36, 44, 45, 48, 55, 60, 66, 72, 75, 88, 90, 91, 96, 99, 101, 110, 111, 120, 132, 137, 144, 150, 165, 176, 180, 182, 192, 198, 220, 225, 240, 264, 273, 275, 288, 300, 303, 330, 333, 352, 360, 364, 375, 384, 396, 440, 444
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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If n is a member, then 2n and 5n are usually also members; however, 2*101 and 5*91 are not members.
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EXAMPLE
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91 is a member because 1/91 contains the palindromes 010,
010989010, 010989010989010, etc.
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CROSSREFS
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Sequence in context: A000408 A025321 A153238 this_sequence A154777 A094740 A047400
Adjacent sequences: A086880 A086881 A086882 this_sequence A086884 A086885 A086886
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KEYWORD
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base,nonn
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AUTHOR
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Donald S. McDonald (don.mcdonald(AT)paradise.net.nz), Aug 22 2003
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EXTENSIONS
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Edited and extended by David Wasserman (wasserma(AT)spawar.navy.mil), Jan 19 2006
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