If you've been wondering about that Seaweed Stitch, here's what it looks like on the knit side:
The oblique knit blocks meander gently upwards and to the right.
On the purl side it looks like this:
Like its parent k4, p2 rib, Seaweed needs no border. I like that it adds textural interest without the rigid bars of a plain rib, which to me can feel too businesslike, too masculine.
Cast on multiples of 6.
Row 1: p4, k2, repeat
Row 3: p3, k3, repeat
Row 5: p2, k4, repeat
Row 7: p1, (k4, p2) repeat, end p1
Row 9: p1, (k3, p3) repeat, end p2
Row 11: p1, (k2, p4) repeat, end p5
All even-numbered rows, k the knit, p the purl as they present themselves.
A creative knitter could develop riffs on this basic theme.