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a(n) = the largest n-digit number ending in n-1 zeros that is divisible by n, else 0.
0

%I #2 Mar 30 2012 19:00:22

%S 9,90,900,9000,90000,900000,7000000,90000000,900000000,90000000000,0,

%T 900000000000,0,70000000000000,900000000000000

%N a(n) = the largest n-digit number ending in n-1 zeros that is divisible by n, else 0.

%C See A173478 - A173486.

%K nonn,base

%O 1,1

%A _Jaroslav Krizek_, Feb 19 2010