Dragging (copying) a formula and having cells referenced in formula be spaced differently

I am trying to create a spreadsheet where in one column I have 2 simple formulas that reference two cells in another column. The problem I am running into is I am trying to drag (copy) the formulas sequentially (aka the formulas will alternate every other cell in the column so A1 will have formula X, A2 will have formula Y, A3 will have formula X, A4 will have formula Y....etc) while the cells that I need to reference for the formulas are not in the same order. They are spaced differently than the cells in the formulas are. I have attached a sample spreadsheet with my problem. Any help would be appreciated.

Thanks