code: def ints(self, qlist):
          
  
          m, n, t = self.args
          return (((n*i + j)*2 + u)*t + k for (i, j, u, k) in qlist)
docs: Converts a sequence of chimera_index node labels into
          linear_index node labels, preserving order
  
          Parameters
          ----------
          qlist : sequence of ints
              The chimera_index node labels
  
          Returns
          -------
          rlist : iterable of tuples
              The linear_lindex node lables corresponding to qlist