OFFSET
0,3
COMMENTS
a(5) has 120 digits and is too large to include.
FORMULA
a(n) = Sum_{0<=k<n!} 10^k.
PROG
(PARI) a(n)=10^n!\9 \\ Charles R Greathouse IV, Dec 27 2012
CROSSREFS
KEYWORD
nonn,easy,less
AUTHOR
Jon Perry, Sep 09 2012
STATUS
approved