Arrays Advanced - Lab.04. Last K Numbers

function lastKseq(lengthOfSeq, previousElementCount) {
    let arr = [1];
    for (let i = 1; i < lengthOfSeq; i++) {
        let nextElement = 0;

        for (let j = 1; j <= previousElementCount; j++) {
            if (i - j >= 0) {
                nextElement += (arr[i - j]);
            }
        }
        arr.push(nextElement);
    }
    console.log(arr.join(" "));
}