This is a simple toe-up sock pattern with a figure-eight cast on and short row heel (although it would be easy to sub in your favorite toe or heel). The stitch pattern, “Seaweed” from Barbara Walker’s second treasury was easy to memorize. Although it’s not a standard rib, it’s kind of rib-ish, so the socks are stretchy and stay up well.

The pattern also written up in this blog post: http://archiknist.blogspot.com/2007/07/seaweed-socks.html