let input = [
'30'
];

let print = this.print || console.log;
let gets = this.gets || ((arr, index) => () => arr[index++])(input, 0);
    let num = +gets();
    let matrix = new Array(num);
    let startPoint = 1;
let aboveMainDiagonalSum = 0;
let bignumbers = BigInt(0)

    for (let row = 0; row < num; row++) {
        matrix[row] = new Array(num);
        for (let col = 0; col < num; col++) {
            matrix[row][col] = startPoint;
            startPoint *= 2;
        }
        startPoint = matrix[row][0] * 2;
    }

    for (let i = 0; i < matrix.length; i++) {
        for (let j = i + 1; j < matrix.length; j++) {
            bignumbers += BigInt(matrix[i][j])

        }
}

    print(bignumbers);