> phh("hex3", 2L, nrow = 9, ncol = 9)
/------------------\
| 2 2 2 2 2 2 1 2 2|
|2 2 2 2 1 2 2 2 2 |
| 2 1 2 2 2 2 2 2 1|
|2 2 2 2 2 2 1 2 2 |
| 2 2 2 1 2 2 2 2 2|
|2 1 2 2 2 2 2 2 1 |
| 2 2 2 2 2 1 2 2 2|
|2 2 2 1 2 2 2 2 2 |
| 1 2 2 2 2 2 2 1 2|
\------------------/

