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A019551
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n followed by 3n.
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0
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13, 26, 39, 412, 515, 618, 721, 824, 927, 1030, 1133, 1236, 1339, 1442, 1545, 1648, 1751, 1854, 1957, 2060, 2163, 2266, 2369, 2472, 2575, 2678, 2781, 2884, 2987, 3090, 3193, 3296, 3399, 34102, 35105, 36108
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,1
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REFERENCES
| Sylvester Smith, "A Set of Conjectures on Smarandache Sequences", Bulletin of Pure and Applied Sciences, (Bombay, India), Vol. 15 E (No. 1), 1996, pp. 101-107.
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LINKS
| M. L. Perez et al., eds., Smarandache Notions Journal
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FORMULA
| a(n)=n*10^floor[log10(3*n)+1]+3*n, with n>=1 [From Paolo P. Lava (paoloplava(AT)gmail.com), Mar 24 2010]
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CROSSREFS
| Sequence in context: A033025 A044838 A033010 * A098961 A033897 A005029
Adjacent sequences: A019548 A019549 A019550 * A019552 A019553 A019554
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KEYWORD
| nonn,base
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AUTHOR
| R. Muller
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