Seed stitch is one of my favorite textured stitches. It is simple and only a two row repeat making it easy to remember and design with. The number of stitches required for this stitch is a multiple of two, sometime it will be a multiple of two plus one.
Seed Stitch (worked flat) Multiple of 2
Row 1: *K1, P1* repeat * to *
Row 2: *P1, K1*
Seed Stitch (worked in the round) Multiple of 2 +1
Round 1: *K1, P1* K1
Round 2: *P1, K1* P1