If you google Pineapple quilt block, you will get loads of hits. Here is one from quilters cache that is 15".
http://www.quilterscache.com/P/Pineapple2Block.html
Here is a slightly different one you can download to a .pdf file
http://www.blockcentral.com/qp-patte...ineapple.shtml
Here is a pattern for a 9" block
http://quilting.about.com/od/blockof...pple_quilt.htm
there are tons out there for free and others that you need to buy a ruler for, then there is traditional with templates or just make like a log cabin and trim