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A202037 as a simple table

na(n)
10
20
30
40
50
61
71
81
92
105
1115
1264
13342
142344
1519090
16179562
171878277
1821365403
19258965451
203294561195
2143472906719
22589744428065
238171396893523
24115094557122380
251642269376265063
2623679803216530017
27344396036645439675
285045351124912000756

[0,0,0,0,0,1,1,1,2,5,15,64,342,2344,19090,179562,
 1878277,21365403,258965451,3294561195,43472906719,
 589744428065,8171396893523,115094557122380,
 1642269376265063,23679803216530017,
 344396036645439675,5045351124912000756]