Vertices: required points to estimate the linear mixture terms
Axial check blends: points half-way between the centroid and the vertices to improve linear term estimates
Constraint plane centroids: points directly opposite the vertices to improve linear term estimates
Additional centroid points: points in the exact center used to estimate curvature
Blocks: for each block a centroid run will be added to estimate block effects
Points needed for blocks: number of centroid points used to estimate block effects
Total: sum of vertices, axial check blends, constraint plane centroids, and additional center points.