In telecommunication, an n-sequence is a pseudorandom binary sequence of n< bits that
- (a) is the output of a linear shift register, and
- (b) has the property that, if the shift register is set to any nonzero state and then cycled, a pseudorandom binary sequence of a maximum of n = 2m -1 bits will be generated, where m is the number of stages, i.e. , the number of bit positions in the register, before the shift register returns to its original state and the n-bit output sequence repeats.
Source: from Federal Standard 1037C