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A189413 as a simple table

na(n)
10
21
370
41038
57398
635727
7130768
8400116
91062016
102531001
115529310
1211272710
1321639022
1439559591
1569283632
16116910052
17190977408
18303286461
19469431366
20710400658
211053055398
221532253131
232192246528
243088876728
254290532688
265882825641
277969711934
2810677299074
2914156978846
3018591603883
3124195121104

[0,1,70,1038,7398,35727,130768,400116,1062016,
 2531001,5529310,11272710,21639022,39559591,
 69283632,116910052,190977408,303286461,469431366,
 710400658,1053055398,1532253131,2192246528,
 3088876728,4290532688,5882825641,7969711934,
 10677299074,14156978846,18591603883,24195121104]