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A156920 as a simple table

na(n)
01
11
21
31
45
51
61
715
818
91
101
1137
12129
1358
141
151
1683
17646
18877
19179
201
211
22177
232685
248030
255280
26543
271
281
29367
3010002
3156285
3282610
3329658
341636
351
361
37749
3834777
39335162
40919615
41756218
42159742
434916
441

[1,1,1,1,5,1,1,15,18,1,1,37,129,58,1,1,83,646,877,
 179,1,1,177,2685,8030,5280,543,1,1,367,10002,
 56285,82610,29658,1636,1,1,749,34777,335162,
 919615,756218,159742,4916,1]