Give the number of treatments (v), the block size (k), the primitive root (x) and the multiplier value for the second set of treatments (m). Then the initial blocks will appear in the text area below. The treatment number must be of the form 4kt+2k+1 and prime (sorry, not a prime power, as yet); this version of the program does not check it is prime. The block size must be odd. A suitable m value can be obtained from another applet.