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Search: id:A118129
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| A118129 |
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Numbers n such that the sum of the first n odd composites is palindromic in base 3. |
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+0
1
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| 6, 14, 20, 424, 1042, 8290, 20802, 21644, 440512, 548008, 749171, 4366390, 5378548, 9850174, 17930596, 36158854, 130427194, 407305710
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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No more terms through 10^9.
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EXAMPLE
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The sum of the first 14 odd composites, when written in
base 3, is the palindrome 201102, so 14 is in the sequence.
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CROSSREFS
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Cf. A058848 (palindromic in base 10).
Sequence in context: A123267 A064708 A064709 this_sequence A046712 A020171 A122784
Adjacent sequences: A118126 A118127 A118128 this_sequence A118130 A118131 A118132
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KEYWORD
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more,nonn
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AUTHOR
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Ryan Propper (rpropper(AT)stanford.edu), May 12 2006
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