I think you need to knit the next 4 rows as follows:
1st row Inc. in first stitch, knit to last 2sts inc in next st, k1 (16sts)
2nd row Purl
3rd row Inc in first stitch, k3, p1,k3,p1,k3,p1, k2,inc in next stitch, k1 (18sts)
4th row Purl
Found out today, can't take it in
Well, that was a farce.........



