Search engine indexing problem... www vs root domain provides different results

I have a bit of a Google riddle, and I'm lost in trying to figure it out.... I am working on a web site called luckylotto.com. Google (and a variety of other search engines) are indexing the site correctly under luckylotto.com, but what is being indexed at www.luckylotto.com is incorrect, and not even on my server. Apparently, the index at www.luckylotto.com is grabbing pages that existed on the site about 4 years ago on an entirely separate server. Get a feel for this at the two links below:

site:www.luckylotto.com

site:luckylotto.com

I've tripled checked the routing for this, and the nameservers are both listed correct. I don't have any other A records pointing to this other server.... Any idea at all what the problem might be, and how to correct it and get it indexing properly?

Check your .htaccess file to make sure there is nothing funny going on in there, like a redirect to an old directory. Also check robots.txt for the same.

It's currently a Wordpress site, and the .htaccess file has nothing but WP stuff. Nothing funny in the robots.txt file... Any other ideas?

The subdomain www.example.com always gets indexed later than what the example.com will be. It is also the case that the subdomain will be referenced through the DNS name server later than what the domain example.com will be.

If you would like to remove either example.com or www.example.com then you will want to redirect using .htaccess.
This will point all example.com to www.example.com or visa versa.

A tutorial for creating a htaccess file can be found on my website: htaccess creating