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Search: id:A081607
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A081607 Number of numbers <= n having at least one 0 in their ternary representation. +0
6
1, 1, 1, 2, 2, 2, 3, 3, 3, 4, 5, 6, 7, 7, 7, 8, 8, 8, 9, 10, 11, 12, 12, 12, 13, 13, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 26, 26, 27, 27, 27, 28, 29, 30, 31, 31, 31, 32, 32, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 45, 45, 46, 46, 46, 47, 48, 49, 50 (list; graph; listen)
OFFSET

0,4

COMMENT

a(n) + A081608(n) = n+1.

CROSSREFS

Cf. A007089, A081602, A081609, A081610.

Adjacent sequences: A081604 A081605 A081606 this_sequence A081608 A081609 A081610

Sequence in context: A099773 A140471 A029061 this_sequence A029060 A029160 A032562

KEYWORD

nonn

AUTHOR

Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Mar 23 2003

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Last modified October 13 09:05 EDT 2008. Contains 145008 sequences.


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