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A171108 as a simple table

na(n)
10
20
321
4225
5882
62370
75175
89891
917220
1027972
1143065
1263525
1390486
14125190
15168987
16223335
17289800
18370056
19465885
20579177
21711930
22866250
231044351
241248555
251481292
261745100
272042625
282376621
292749950
303165582
313626595
324136175
334697616
345314320

[0,0,21,225,882,2370,5175,9891,17220,27972,43065,
 63525,90486,125190,168987,223335,289800,370056,
 465885,579177,711930,866250,1044351,1248555,
 1481292,1745100,2042625,2376621,2749950,3165582,
 3626595,4136175,4697616,5314320]