Google spreadsheet get cell value with row and column index

Question

How we can get value from a cell in google spreadsheet?

I have row and column index from ROW() and COLUMN() - 1.

In other words what is t

Answer 1

Say the row number is in A1, and the column number is in A2, any of these should work:

=OFFSET(A1;A1-1;A2-1)
=INDIRECT("R"&A1&"C"&A2)
=INDEX(A1:400000;A1;A2)