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Search: id:A134026
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| A134026 |
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Numbers that are in balanced ternary representation longer than in ternary representation. |
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+0
4
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| 2, 5, 6, 7, 8, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 122, 123, 124, 125, 126, 127, 128, 129, 130, 131
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OFFSET
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1,1
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COMMENT
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A134021(a(n)) = A081604(a(n)) + 1;
complement of A134025.
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FORMULA
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a(n) = g(n,0,0) with g(n,m,k) = if n=0 then k else if k=3^m-1 then g(n-1,m,3*(k+1)/2+1) else g(n-1,m,k+1).
a(n) = g(n,0,0) with g(n,m,k) = if n=0 then k else if k=3^m-1 then g(n-1,m,3*(k+1)/2+1) else g(n-1,m,k+1).
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CROSSREFS
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Sequence in context: A028791 A080727 A074291 this_sequence A043047 A014355 A048972
Adjacent sequences: A134023 A134024 A134025 this_sequence A134027 A134028 A134029
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KEYWORD
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nonn
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AUTHOR
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Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Oct 19 2007
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