There exists an infinitely large two-dimensional grid of uncolored unit cells. You are given a positive integer n, indicating that you must do the following routine for n minutes: At the first minute, color any arbitrary unit cell blue. Every minute

coloredCells.js

/**
 * @param {number} n
 * @return {number}
 */
var coloredCells = function(n) {
    // This function calculates the number of blue cells in the grid after 'n' minutes.
    // The formula is derived as the sum of two squares:
    // (n * n) represents the number of cells in an n x n grid, which is the inner square.
    // ((n - 1) * (n - 1)) represents the number of cells in an (n-1) x (n-1) grid, which is the outer ring.
    return (n * n) + ((n - 1) * (n - 1));
};