reference cell even the row is deleted

[ggwp]

i have no clue to doing this man,
i expect the output is to be the right chart,
but on the left chart is what i’ve done

i want the cell to still remain the same number even the row is deleted and if i add new no. it still going +1
i need your help guys

 

[bebo021999]

What if, row 10, "619" & "G", has been deleted, after that, if you add "619" & "G" in row 12, what would you expect, 1 or 2?

 

[ggwp]

What if, row 10, "619" & "G", has been deleted, after that, if you add "619" & "G" in row 12, what would you expect, 1 or 2?

2 sir