I want to use offset(c2, 1, 0, 1, 1) for example, to get
the value from c3, but I want to generalize this with
the row and col functions. I basically want to do this...
sumif(a1:a10, true_condition, offset(a1:a10, 1, 0, 1,1)
IOW, if cells A1, and A3 meet the true_condition, I want
to sum A2 and A4. If A5 and A7 meet the true_condition,
I want to sum A6 and A8, etc.