t3_entries
==========

.. py:function:: t3toolbox.backend.entries.t3_entries(x, index)

   .. code-block:: python

      def t3_entries(
              x: typ.Union[
                  typ.Tuple[typ.Sequence[NDArray], typ.Sequence[NDArray]], # (tucker_cores, tt_cores)
                  typ.Tuple[NDArray, NDArray], # (tucker_supercore, tt_supercore)
              ],
              index: NDArray, # dtype=int, shape=(d,)+vsw. (or convertible to int array of this shape)
      ) -> NDArray: # shape=vsw+vsc (W + C, base-inner)


   Compute entries of a Tucker tensor train.