Conditional Sequential number

[Dan Johnson]

I am trying to automatically increment a column of numbers if a second
column is populated, otherwise the auto-numbered cell will be empty if
the cell defining it to be blank is also blank. As an example:


Ticket # Ticket Invoice # Cost

7325689 Y 1234243 $ 48.78
1234244 $356.50
7325690 Y 1234245 $123.32
7325691 Y 1234246 $435.89

So, if the Ticket column is not populated, the Ticket # column will not
increment. In the case of row 2 of data where row 2, column "Ticket" is
not populated with a Y, then there is no increment of Ticket number.
However, when row 3, is populated with Y, the ticket cell increments 1
number from row 1, not row 2. I understand the IF statement but I need
the means by which to look at multiple cells above until it finds the
last ticket # and add 1 to that number.

Is there a way to accommodate the above scenario? Thanks, in advance,
for the help

 

[Dan Johnson]

This format looks more like the column I was discribing:

 

[Biff]

Hi Dan,

Here's one way:

After you have the first row of data entered put this
formula in the next mt cell in column A. For example, if
the first row of data entered is row 3, in A4 enter this
formula and copy down as needed.

=IF(B4<>"Y","",MAX(A$3:A3)+1)

Biff