Guys get this, for column 2, nd = 2t^2 + 2n*t + 1
this can somehow be generalized for even cells.
I feel like this is a BIG improvement, hopefully.
See where it says (2,3)? these are respectively t and n for d = 7. there are more integer solutions, I think one more if I'm not mistaken, the trivial solution.
I don't want to put anyone's hopes down but the two formulas stated here >>7268 are merely the same as
x^2 + e = 2n (d-x)
which can be derived from this equation:
(d+n)^2 - (x+n)^2 = d^2 - e
Pic for c20737