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Search: id:A132141
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| A132141 |
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Numbers whose ternary representation begins with 1. |
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+0
4
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| 1, 3, 4, 5, 9, 10, 11, 12, 13, 14, 15, 16, 17, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108
(list; graph; listen)
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OFFSET
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1,2
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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 number n is a term iff 3^m <= n < 2*3^m -1, for m=0,1,2,... [From Zak Seidov (zakseidov(AT)yahoo.com), Mar 03 2009]
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MATHEMATICA
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Flatten[(Range[3^#, 2 3^#-1])&/@Range[0, 4]] [From Zak Seidov (zakseidov(AT)yahoo.com), Mar 03 2009]
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PROGRAM
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(PARI) s=[]; for(n=0, 4, for(x=3^n, 2*3^n-1, s=concat(s, x))); s [From Zak Seidov (zakseidov(AT)yahoo.com), Mar 03 2009]
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CROSSREFS
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Cf. A007089, A132140, A157671.
Sequence in context: A036710 A098801 A069807 this_sequence A139531 A047249 A050068
Adjacent sequences: A132138 A132139 A132140 this_sequence A132142 A132143 A132144
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KEYWORD
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nonn,base
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AUTHOR
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Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Aug 20 2007
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