This is an example of my table:
Row No.
1 Value Count
2 FALSE 0
3 FALSE 0
4 TRUE 0 (=countif($B$2:B4,TRUE))
5 FALSE 1 (=countif($B$2:B5,TRUE))
6 FALSE 0
7 TRUE 0
8 FALSE 1 (=countif($B$6:B8,TRUE))
9 TRUE 1 (=countif($B$6:B9,TRUE))

In column C, I want to count how many times the value "True" appears in
column B. But I only want to count from the array that stops the row ABOVE
the current one. The starting cell of the array will remain fixed for 4 rows
then it changes. In my example above, for Row No. 2-5, the starting cell is
$B$2. However, for Row No. -9, the starting cell is $B$6.

I want to copy this formula down 2000+ rows without having to manually
change the starting cell. Can this be done?