There are only 4.29 billion possible values of an int32, so even if you used 2 lines for each case, it’d still be under 10 billion lines of code

bool isOdd(int num) {
    if (num == 1)
        { return true; }
    if (num == 2)
        { return false; }
    if (num == 3)
        { return true; }
    …
}

Im think it was designed with a clock in mind. That’s why it starts with north at the 12:00 position and goes clockwise. I learned it as ‘Never Eat Soggy Waffles’ but I’m sure there are a bunch of these.