I chained 220 with a hook (I always, always use a hook two sizes up for a foundation chain when I& making a scarf - it stops that annoying curve) and then, using a hook, simply worked half trebles (half doubles US) in the back loops.
Tailored knitting stitch pattern with chart. Just knits & purls - 15 row repeat. Alternate rows knit as indicated. Very easy, but this is a pattern you must watch while you knit. Not a knit while watching TV pattern. Would be great for throw or blanket.