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a(n) has n! 1's
0

%I #13 Dec 20 2015 16:35:48

%S 1,1,11,111111,111111111111111111111111

%N a(n) has n! 1's

%C a(5) has 120 digits and is too large to include.

%F a(n) = Sum_{0<=k<n!} 10^k.

%o (PARI) a(n)=10^n!\9 \\ _Charles R Greathouse IV_, Dec 27 2012

%K nonn,easy,less

%O 0,3

%A _Jon Perry_, Sep 09 2012