function __fib3(n) {
    return Array.from({length: n + 1}).reduce((r, _, i) => {
        let result;
        if (i <= 1) {
            result = i;
        } else {
            result = r[i - 2] + r[i - 1];
        }

        r.push(result);
        return r;
    }, []);
}