Simple repeat the same in each row until you have achieve the height of the blanket you want to create.
Whether you choose to create a blanket in either single crochet or half double crochet, both patterns are very simple to create in the size you want: Some people consider the single crochet stitch as the quickest stitch to create a quick crochet baby blanket, but the half double crochet is slightly taller and will work up even quicker than just single crochet. The half double crochet stitch is the best choice for a quick and easy crochet baby blanket and it will create a no holes baby blanket too - perfect for those tiny fingers exploring the world by touch.