a(n,r) tabl head (triangle) for  A105806 (nr. of partitions of n with non-negative Dyson rank r) 
 
    n\r      0    1    2    3    4   5    6    7     8     9   10   11   12   13   14   15 . . .
 
    1        1    0    0    0    0   0    0    0     0     0    0    0    0    0    0    0
    2        0    1    0    0    0   0    0    0     0     0    0    0    0    0    0    0     
    3        1    0    1    0    0   0    0    0     0     0    0    0    0    0    0    0         
    4        1    1    0    1    0   0    0    0     0     0    0    0    0    0    0    0        
    5        1    1    1    0    1   0    0    0     0     0    0    0    0    0    0    0          
    6        1    2    1    1    0   1    0    0     0     0    0    0    0    0    0    0            
    7        3    1    2    1    1   0    1    0     0     0    0    0    0    0    0    0          
    8        2    3    2    2    1   1    0    1     0     0    0    0    0    0    0    0        
    9        4    3    3    2    2   1    1    0     1     0    0    0    0    0    0    0        
   10        4    5    3    4    2   2    1    1     0     1    0    0    0    0    0    0
   11        6    5    6    3    4   2    2    1     1     0    1    0    0    0    0    0
   12        7    8    6    6    4   4    2    2     1     1    0    1    0    0    0    0 
   13       11    8    9    7    6   4    4    2     2     1    1    0    1    0    0    0    
   14       11   13   10   10    7   7    4    4     2     2    1    1    0    1    0    0 
   15       16   14   15   11   11   7    7    4     4     2    2    1    1    0    1    0
   16       19   20   16   17   12  11    8    7     4     4    2    2    1    1    0    1
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