JMB wrote:
> Won't that throw an error if the first row or column is deleted (assuming the
> table does not start in cell A1)?
>
>
> "Bob Phillips" wrote:
>
>
>>=FACT(ROW(A1))

ROW(A1) is not an idiom one would choose if one is concerned with
robustness.

=FACT(ROWS($1:1))

entered in A1, would be robust against inserting rows/columns before the
formula cell and against deleting the first formula row.