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Search: id:A029714
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| A029714 |
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a(n) = Sum S(k), k divides 3^n, where S is the Kempner-Smarandache function A002034. |
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+0
2
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| 1, 4, 10, 19, 28, 40, 55, 73, 91, 112, 136, 163, 190, 217, 247, 280, 316, 352, 391, 433, 478, 523, 571, 622, 676, 730, 784, 841, 901, 964, 1027, 1093, 1162, 1234, 1306, 1381, 1459, 1540, 1621, 1702, 1783, 1867, 1954, 2044, 2134, 2227, 2323, 2422, 2521, 2623
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OFFSET
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0,2
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FORMULA
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a(n) = Sum_{k=0..n-1} A002034(3^k). [From Alois P. Heinz (heinz(AT)hs-heilbronn.de), Sep 14 2008]
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MAPLE
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s:= proc(n) local m; m:= 1; while not type(m!/n, integer) do m:= m+1 od; m end: a:= n-> add (s(3^k), k=0..n-1): seq(a (n), n=1..70); [From Alois P. Heinz (heinz(AT)hs-heilbronn.de), Sep 14 2008]
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CROSSREFS
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Cf. A029715, A002034.
Sequence in context: A073262 A145731 A162958 this_sequence A062198 A050858 A022785
Adjacent sequences: A029711 A029712 A029713 this_sequence A029715 A029716 A029717
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KEYWORD
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nonn
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AUTHOR
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Norbert Hungerbuhler (buhler(AT)math.ethz.ch)
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EXTENSIONS
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More terms from Alois P. Heinz (heinz(AT)hs-heilbronn.de), Sep 14 2008
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