Lori in Michigan asked for the pattern, and since Blogger won't tell me how to contact Lori, you all get it! It's a very simple four-stitch, two-row repeat:
Row One: Knit
Row Two: *K2, Slip 1, K1, YO, PSSO* repeat from *
I found this pattern, along with Jill's recommendation, at Aloha & Oreos, although I can't find the specific entry right now. Thanks to Jill for sharing!
ETA: This stitch pattern as written above is for knitting in the round. If you are knitting flat, row one would be purl.