ADDRESS(row_num,col_num[,abs_num,a1,text])
ADDRESS returns a cell address as text for specified row and column numbers.
a1 is a logical value that specifies the reference style. If a1 is TRUE or omitted, ADDRESS returns an A1-style reference, i.e. $D$4. Otherwise ADDRESS returns an R1C1-style reference, i.e. R4C4.
text specifies the name of the worksheet to be used as the external reference.
ADDRESS(5,4) equals "$D$5".
ADDRESS(5,4,4) equals "D5".
ADDRESS(5,4,3,FALSE) equals "R[5]C4".