```
% pandoc -f rst -t native
+--------+----------------+
| 123456 | :math:`a + b`  |
+--------+----------------+
^D
[Table ("",[],[]) (Caption Nothing
 [])
 [(AlignDefault,ColWidth 0.125)
 ,(AlignDefault,ColWidth 0.2361111111111111)]
 (TableHead ("",[],[])
 [])
 [(TableBody ("",[],[]) (RowHeadColumns 0)
  []
  [Row ("",[],[])
   [Cell ("",[],[]) AlignDefault (RowSpan 1) (ColSpan 1)
    [Plain [Str "123456"]]
   ,Cell ("",[],[]) AlignDefault (RowSpan 1) (ColSpan 1)
    [Plain [Math InlineMath "a + b"]]]])]
 (TableFoot ("",[],[])
 [])]
```