Libster there is no real pattern that I know of. I saw this on the border of a quilt in a magazine and thought it would be pretty as a block. They are 2 7/8" blocks cut on the half triangle with the coordinating colors then a sashing added and then the 3 on each side. VERY easy and I like the block..Im thinking of making it a border around my next quilt.
Loving ALL my blocks so far...I'm trying not to rush and then not have any to make with a couple months to wait for them to come back!!