function value = ubvec_enum ( n )

%*****************************************************************************80
%
%% UBVEC_ENUM enumerates the unsigned binary vectors of length N.
%
%  Discussion:
%
%    A UBVEC is a vector of N binary digits.
%
%    A UBVEC can be interpreted as a binary representation of an
%    unsigned integer, with the first entry being the coefficient of
%    2^(N-1) and the last entry the coefficient of 1.
%
%    UBVEC   #
%    -----  --
%    00000   0
%    00001   1
%    00010   2
%    10000  16
%
%  Licensing:
%
%    This code is distributed under the GNU LGPL license.
%
%  Modified:
%
%    19 November 2015
%
%  Author:
%
%    John Burkardt
%
%  Parameters:
%
%    Input, integer N, the length of the vectors.
%
%    Output, integer VALUE, the number of binary vectors.
%
  value = 2 ^ n;

  return
end
