Here you go. I think this also called Feather and Fan, but I'm not certain.
RIPPLE STITCH PATTERN: (multiple of 18) plus any outer edge sticthes you wish to add
Row 1: (RS) K4 * [K2tog] 3 times, [K1, yo] 6 times, [K2tog] 3 times; rep bet *'s end K4
Rows 2: & 3: Knit all stitches
Row 4: K4, purl across all but last four, K remaining 4 stitches.
I used the cable cast on and cast on a multiple of 18 plus an extra 4 for each end. Work the first four rows in garter stitch (knitting all stitches) and then start the pattern. Remember that the K4 in the beginning and ending of the above instructions are to be done in garter stitch. If you choose, you can make more or less of these stitches. Continue the pattern until you have it the desired length ending in four rows of garter stitch. Bind off.