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Search: id:A032924
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| A032924 |
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Numbers whose ternary expansion contains no 0. |
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+0
13
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| 1, 2, 4, 5, 7, 8, 13, 14, 16, 17, 22, 23, 25, 26, 40, 41, 43, 44, 49, 50, 52, 53, 67, 68, 70, 71, 76, 77, 79, 80, 121, 122, 124, 125, 130, 131, 133, 134, 148, 149, 151, 152, 157, 158, 160, 161, 202, 203, 205, 206, 211, 212, 214, 215, 229, 230, 232, 233, 238, 239
(list; graph; listen)
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OFFSET
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1,2
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COMMENT
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Complement of A081605. - Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Mar 23 2003
a(n) = A107680(n) + A107681(n); - Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), May 20 2005
A081604(A107681(n)) <= A081604(A107680(n)) = A081604(a(n)) = A000523(n+1). - Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), May 20 2005
A081602(a(n)) = 0. - Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Mar 02 2008
Subsequence of A154314. [From Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Jan 07 2009]
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REFERENCES
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David Garth and Adam Gouge, Affinely Self-Generating Sets and Morphisms, Journal of Integer Sequences, Vol. 10 (2007), Article 07.1.5.
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LINKS
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R. Zumkeller, Table of n, a(n) for n = 1..10000
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FORMULA
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a(1)=1, a(n+1)=f(a(n)+1,f(a(n)+1) where f(x,y) = if x<3 and x<>0 then y else if x mod 3 = 0 then f(y+1,y+1) else f(floor(x/3),y). - Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Mar 02 2008
a(2n)=a(2n-1)+1, n>0. [From Zak Seidov (zakseidov(AT)yahoo.com), Jul 27 2009]
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CROSSREFS
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Cf. A005823, A005836, A007089, A081602, A081608.
Cf. A132140, A132141.
Sequence in context: A025516 A072920 A107899 this_sequence A005125 A082672 A135693
Adjacent sequences: A032921 A032922 A032923 this_sequence A032925 A032926 A032927
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KEYWORD
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nonn,base
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AUTHOR
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Clark Kimberling (ck6(AT)evansville.edu)
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