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A180752 as a simple table

na(n)
10
21
31
42
53
67
714
831
967
10148
11325
12717
131580
143485
157685
1616950
1737383
1882451
19181850
20401083
21884615
221951080
234303241
249491097
2520933272
2646169785
27101830665
28224594602
29495358987
301092548639
312409691878
325314742743

[0,1,1,2,3,7,14,31,67,148,325,717,1580,3485,7685,
 16950,37383,82451,181850,401083,884615,1951080,
 4303241,9491097,20933272,46169785,101830665,
 224594602,495358987,1092548639,2409691878,
 5314742743]