I've got my site indexed the very first day of its life by google.. few backlinks, nothing major. It was on the top on the domain name keyword and well randed on few others. It lasted for three days and today it is completely removed from index. Not ever www.sitename.com gots it. Since it is legitimate, quality website I can only think of one thing that may happened and you tell me if this possible and someone have similar experience. I've put the link in wikipedia.. I knew chances were small but i did it anyway. Link was removed next day. Can it be that website got indexed so quickly because of this and then again quickly removed to sit in dark once wikipedia link was removed?
The first day you were not get indexed yet. I had the same experience with google. First search your domain name you can get the result, but check the description and found it was not from the meta description. Try to have your site linked by other pages, and wait a few days or 1 month when google update its data, you will find site there.