讨论了b(ak-3),b(ak-2),…,b(ak+2),b(ak+3)等广义自缩序列的最小周期,通过选择适当的比特串并分析其个数的奇偶性,在大多数情形下证明了它们的最小周期达到最大,即2^n-1。
This paper discusses the least periods of generalized self-shrinking sequences b (ak-3), b (ak-2), ……, b (ak+2),b (ak+3), …… ,etc. By selecting suitable bit strings and analysing the numbers of their occurrences,the au- thor proves that in most cases their least periods reach the maximum, namely 2^n-l.