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