I'm gonna update this thread a bit. I'm not going to talk in those coordinates in OP either because I never really did much with them it's more of a way to generate where they'd be. That pattern in OP is the 'D grid' for every d. No matter what number you have, the d grid is the same but in a different spot.
First pic is the entry of 121. What is highlighted in red is the D grid. The second pic is me on the center of the d grid. If you would like to know how it is constructed, basically start from the center point (which is at (e,n) = (-dd, -d) ) and go to the left square intervals (-dd-1, -dd-4, -dd-9 etc,) and your n values are going to stay the same at -d. Then from each of these points you draw parabolas out to the right. This creates the d grid that looks sort of like a web. The first parabola at -dd that goes to the right kind of spawns off straight lines. The first tangent line for this has the slope that goes over 2 and down 1. The next tangent goes over 4 and down one. This pattern continues. It's cool because these are linear patterns that come from parabolic origins. Third pic is on the second 'tangent' line