OFFSET
1,1
FORMULA
a(n) = (Sum_{k>=1} k!) mod 10^n. - Sean A. Irvine, Mar 19 2021
EXAMPLE
Look at A007489, the partial sums of the factorials. The last digit stabilizes at 3, so a(1) = 3. The last two digits stabilize at 13, so a(2) = 13. - N. J. A. Sloane, Mar 22 2021
CROSSREFS
KEYWORD
nonn,base
AUTHOR
STATUS
approved