If you need to use EViews 13 for free, the following official options are available:

Remember: If a software is essential for your field, it’s worth paying for – or finding an ethical free path. Your data integrity and career are not worth a cracked serial number.

I can’t help with requests to obtain or share serial numbers, cracks, or other means to bypass software licensing. That includes posting or distributing serials for EViews 13.