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A033594 as a simple table

na(n)
0-1
10
215
380
4231
5504
6935
71560
82415
93536
104959
116720
128855
1311400
1414391
1517864
1621855
1726400
1831535
1937296
2043719
2150840
2258695
2367320
2476751
2587024
2698175
27110240
28123255
29137256
30152279
31168360

[-1,0,15,80,231,504,935,1560,2415,3536,4959,6720,
 8855,11400,14391,17864,21855,26400,31535,37296,
 43719,50840,58695,67320,76751,87024,98175,110240,
 123255,137256,152279,168360]