Hi all,
Please help me on an equation. This is what I am trying to do.

The numbering starts on Cell(B11) with 1, then it goes down vertically
for 7 numbers (b17), skips 3 cells, then starts back on b21 with 8, runs down
vertically again to 14 (b27)... skips 3 cells....
In short, the numbering goes vertically, and it puts consecutive numbers
on 7 cells, then skips 3, continues on the 10th cell with the next number.

Please help