Stockinette stitch, aka stocking stitch and usually abbreviated "St st", is the most basic stitch pattern in knitting. Viewed from the right side, it is nothing but knit stitches.
It can be worked on any number of stitches.
In the round
R1: *k1, repeat from *
Worked flat
R1: *k1, repeat from * R2: *p1, repeat from *