SOURCE

function fn(n) {
    for (var i = 0; i <= n; i++) {
        var arr = [];
        for (var j = 0; j <= i; j++) {
            // console.log(i,j)
            arr.push(combination(i, j))
        }
        console.log(arr)
    }
}

function combination(m, n) {
    if (n == 0) {
        return 1;
    } else if (m == n) {
        return 1;
    } else {
        return combination(m - 1, n - 1) + combination(m - 1, n)
    }
}

fn(5)