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A056521 as a simple table

na(n)
10
20
30
40
50
61
71
87
910
1043
1165
12219
13350
141058
151701
164796
177770
1821094
1934105
2090205
21145749
22379326
23611501
241573205
252532530
266465123
2710391735
2826378849
2942355950
30107089814
31171798901
32433088656
33694337225
341746623215
352798806984
367029320466
3711259666950

[0,0,0,0,0,1,1,7,10,43,65,219,350,1058,1701,4796,
 7770,21094,34105,90205,145749,379326,611501,
 1573205,2532530,6465123,10391735,26378849,
 42355950,107089814,171798901,433088656,694337225,
 1746623215,2798806984,7029320466,11259666950]