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A109002 Maximal difference between two n-digit numbers: a(1) =9-0 =9; a(n) = (10^n -1) - 10^(n-1), n >1. +0
1
9, 89, 899, 8999, 89999, 899999, 8999999, 89999999, 899999999, 8999999999, 89999999999, 899999999999, 8999999999999, 89999999999999, 899999999999999 (list; graph; listen)
OFFSET

1,1

EXAMPLE

a(4) = 9999-1000 = 8999.

CROSSREFS

Sequence in context: A072256 A138288 A059482 this_sequence A142991 A152267 A082147

Adjacent sequences: A108999 A109000 A109001 this_sequence A109003 A109004 A109005

KEYWORD

base,easy,nonn

AUTHOR

Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Aug 14 2005

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.


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