a(n,m) tabl head (triangle) for  A091044


 n\m      0      1      2      3      4      5      6      7      8      9

                           
   1      1      0      0      0      0      0      0      0      0      0
                           
   2      2      2      0      0      0      0      0      0      0      0
                           
   3      3     10      3      0      0      0      0      0      0      0
                           
   4      4     28     28      4      0      0      0      0      0      0
                           
   5      5     60    126     60      5      0      0      0      0      0
                           
   6      6    110    396    396    110      6      0      0      0      0
                           
   7      7    182   1001   1716   1001    182      7      0      0      0
                           
   8      8    280   2184   5720   5720   2184    280      8      0      0
                           
   9      9    408   4284  15912  24310  15912   4284    408      9      0
                          
  10     10    570   7752  38760  83980  83980  38760   7752    570     10