From Knitting New Scarves:
When knit with a deliciously soft yarn with beautiful drape such as the wool-silk blend shown here, this pleated scarf is a perfect marriage of material and method. It’s probably the most challenging pattern in the book because the directions do not specify stitch numbers; instead, you need to recognize the logic of the stitch sequencing that makes the pleats “drift,” as well as manipulate as many as six needles in an unconventional setup. After you work the pleat setup and knit a few rows it gets easier, but it still requires your undivided attention.
Requires five US 8 double-pointed needles, US 8 straight needles, and one US 5 straight or double-pointed needle. Also requires J-shaped cable needle.