(self)
return 2**self.n
Returns the number of bit vectors in the Gray code.

        Examples
        ========

        >>> from sympy.combinatorics.graycode import GrayCode
        >>> a = GrayCode(3)
        >>> a.selections
        8
Returns the number of bit vectors in the Gray code.
Returns the number of bit vectors in the Gray code .
def selections(self):
        """
        Returns the number of bit vectors in the Gray code.

        Examples
        ========

        >>> from sympy.combinatorics.graycode import GrayCode
        >>> a = GrayCode(3)
        >>> a.selections
        8
        """
        return 2**self.n
def selections ( self ) : return 2 ** self . n