The directions for the first two rows describe them as the "set up rows". They're to show you where to place the pattern. The actual instructions are to repeat the pattern "as given for the back". So it's correct in the pattern and just as Ingrid says, the same pattern as the main body.
Quote from your other post: "The pattern for the sleeves are as follows; Row 1 k4p4 for 32 stitches. Row 2 purl. These two rows set the pattern. Cont in pattern to match Back, inc one at each end of 5th row and every following 4th row until there are 56 sts, working inc sts into pattern."