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A294288 as a simple table

na(n)
10
20
317
482
5354
6898
72275
84420
98772
1014708
1125333
1238678
1360710
1486870
15127687
16174216
17243848
18320808
19432345
20552666
21722666
22902506
231151403
241410508
251763020
262125084
272610621
283103646
293756718
304413374
315273999
326131984
337246096
348348496
359768353

[0,0,17,82,354,898,2275,4420,8772,14708,25333,
 38678,60710,86870,127687,174216,243848,320808,
 432345,552666,722666,902506,1151403,1410508,
 1763020,2125084,2610621,3103646,3756718,4413374,
 5273999,6131984,7246096,8348496,9768353]