%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