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Search: id:A110395
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| A110395 |
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a(1) = 1. a(n) = n times (10's complement of a(n-1)). |
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+0
2
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| 1, 18, 246, 3016, 34920, 390480, 4266640, 45866880, 487198080, 5128019200, 53591788800, 556898534400, 5760319052800, 59355533260800, 609667001088000, 6245327982592000, 63829424295936000, 651070362673152000
(list; graph; listen)
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OFFSET
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1,2
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COMMENT
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a(1)=1; a(n)=n*[10...0 - a(n-1)] for n>1 (00...0 and a[n-1] have the same number of digits). - Emeric Deutsch (deutsch(AT)duke.poly.edu), Jul 31 2005
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EXAMPLE
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a(4) = 4* 10's complement of a(3) = 4*(1000-246) = 3016.
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MAPLE
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s:=proc(m) nops(convert(m, base, 10)) end: a[1]:=1: for n from 2 to 21 do a[n]:=n*(10^s(a[n-1])-a[n-1]) od: seq(a[n], n=1..21); (Deutsch)
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CROSSREFS
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Cf. A110394.
Adjacent sequences: A110392 A110393 A110394 this_sequence A110396 A110397 A110398
Sequence in context: A081203 A016294 A001713 this_sequence A016183 A016239 A001722
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KEYWORD
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base,easy,nonn
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AUTHOR
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Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Jul 29 2005
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EXTENSIONS
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More terms from Emeric Deutsch (deutsch(AT)duke.poly.edu), Jul 31 2005
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