Formula Touch Grid (4×4 / 5×5)
This grid is built by a seeded formula (not fixed layout, not random):
grid[r][c] = (base + r·stepR + c·stepC) mod 10
where base, stepR, stepC are derived from your input number.
Green = all occurrences of your input digits anywhere in the grid ·
Gold = hot neighbor cells (8-way) around any highlighted cell.
Output
Helps keep this tool free for the Pick 3 Genius community.