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Equals 10*A002283. Partial sums give 10*A099676.
Table of n, a(n) for n=0..17.
a:=n->sum (10^(n-j+2)-10^(n-j+1), j=0..n): seq(a(n), n=0..28);
Sequence in context: A101243 A173483 A202960 * A223364 A048548 A013427
Adjacent sequences: A124164 A124165 A124166 * A124168 A124169 A124170
Zerinvary Lajos, Dec 02 2006