I don't mean this as an insult to the excellent analysis folks have done on this thread, but doesn't this strike anyone as silly? All knitting patterns share common elements. This person was inspired by the numbers in the original pattern; but those numbers were themselves inspired by something else -- quite possibly something copyrighted. Does the original designer now own the copyright on anything with ones and zeroes in knitting?
The consesnsus here might be right, and in the eyes of the law you might be violating a copyright; but if so, the law is oppressive to creativity and offends fairness and common sense.