I noticed in the tutor for this stitch,they say its the same thing,but in several pattern books I have as well as on other sites,they have this:
> Moss Stitch
> Even # of sts
>
> Row 1: k1,p1
> Row 2: k1,p1
> Row 3: p1,k1
> Row 4: p1,k1
>
>
> Seed Stitch
> even # of sts
>
> Row 1: k1,p1
> Row 2: p1,k1
Seed St on Uneven number of stitches:
If you cast on an uneven number of stitches,i.e:17,19,etc…then for seed stitch you just knit 1,purl 1 across every row.It staggers the seed stitches and they are very pretty.