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A030529 as a simple table

na(n)
20
30
41
54
617
766
8269
91102
104635
1119768
1285659
13375524
141664015
157438862
1633515027
17152016610
18693622315
193181516040
2014661568795
2167850245684
22315187594779
231469195413102
246869889480447
2532215398047474
26151467333043437
27713881813137776
283372142135461789

[0,0,1,4,17,66,269,1102,4635,19768,85659,375524,
 1664015,7438862,33515027,152016610,693622315,
 3181516040,14661568795,67850245684,315187594779,
 1469195413102,6869889480447,32215398047474,
 151467333043437,713881813137776,3372142135461789]