+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
|        |                                   |  |
+--+--+  +--+--+--+--+  +--+--+--+--+--+--+  +  +
|  |     |              |     |     |        |  |
+  +  +--+  +--+--+  +--+  +  +  +  +--+--+  +  +
|  |  |     |        |     |     |        |     |
+  +  +  +  +--+--+--+  +--+--+--+--+--+  +--+  +
|  |  |  |  |           |  |        |     |     |
+  +  +  +  +  +--+--+--+  +  +  +--+  +--+  +--+
|     |  |  |  |        |     |     |  |     |  |
+  +--+  +  +  +--+  +  +--+--+--+  +  +--+  +  +
|     |  |           |              |     |     |
+--+  +  +--+--+--+--+--+  +--+--+  +--+  +--+--+
|  |  |  |     |        |  |     |     |        |
+  +  +  +  +  +  +--+  +  +  +  +--+  +--+--+  +
|     |     |  |  |     |  |  |     |        |  |
+  +--+--+--+--+  +  +--+  +  +--+  +--+--+--+  +
|     |        |  |     |  |     |     |        |
+--+  +  +--+  +  +--+  +--+--+  +--+  +  +--+  +
|     |     |     |  |  |        |  |  |  |     |
+  +--+--+  +--+--+  +  +  +--+--+  +  +  +--+--+
|           |     |     |     |     |  |        |
+--+--+--+--+  +--+  +--+--+  +  +  +  +--+--+  +
|                             |  |              |
+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+


eriol (at) mornie.org
        

4624 = 4⁴ + 4⁶ + 4² + 4⁴