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Search: id:A093847
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A093847 First column of triangle A093846. +0
5
9, 54, 399, 3249, 27999, 249999, 2285713, 21249999, 199999999, 1899999999, 18181818180, 174999999999, 1692307692306, 16428571428570, 159999999999999, 1562499999999999, 15294117647058822, 149999999999999999 (list; graph; listen)
OFFSET

1,1

FORMULA

a(n) = 10^(n-1)-1+floor(9*10^(n-1)/n) = A093846(n, 1). - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jun 23 2006

MAPLE

A093847 := proc(n) RETURN (10^(n-1)-1+floor(9*(10^(n-1)/n))); end; for n from 1 to 20 do printf("%d, ", A093847(n)); od; - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jun 23 2006

CROSSREFS

Cf. A093846.

Sequence in context: A115784 A037599 A037704 this_sequence A058849 A058852 A068970

Adjacent sequences: A093844 A093845 A093846 this_sequence A093848 A093849 A093850

KEYWORD

base,easy,nonn

AUTHOR

Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Apr 18 2004

EXTENSIONS

More terms from R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jun 23 2006

Edited by David Wasserman (dwasserm(AT)earthlink.net), Mar 26 2007

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Last modified July 26 13:41 EDT 2008. Contains 142293 sequences.


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