#N   (0,-1)    (1,0)    (2,0)
#- -------- -------- --------
 5       47       35       47
 6      125       95      125
 7      325      242      325
 8      853      641      853
 9     2227     1673     2227
10     5865     4393     5865
11    15335    11511    15335
12    40391    30283    40391
13   105855    79374   105855
14   278705   208982   278705
15   731541   548441   731541