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A261943 as a simple table

na(n)
10
20
310
40
546
60
7202
8415
9852
101739
113532
120
1314484
1429256
1558994
160
17239144
180
19966551
201941541
213898357
227824445
2315699345
2431490743
2563151055
26126614175
27253804613
28508678162
291019341796

[0,0,10,0,46,0,202,415,852,1739,3532,0,14484,
 29256,58994,0,239144,0,966551,1941541,3898357,
 7824445,15699345,31490743,63151055,126614175,
 253804613,508678162,1019341796]