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A153278 as a simple table

na(n)
11
21
33
41
54
613
71
85
923
1075
111
126
1336
14175
15541
161
177
1852
19342
201662
214683
221
238
2471
25594
264048
2718937
2847293
291
309
3193
32949
338444
3457437
35251729
36545835
371
3810
39118
401425
4115775
42143783
43950512
443824282
457087261
461
4711
48146
492040
5027146
51313920
522854261
5317975438
5465361237
55102247563

[1,1,3,1,4,13,1,5,23,75,1,6,36,175,541,1,7,52,342,
 1662,4683,1,8,71,594,4048,18937,47293,1,9,93,949,
 8444,57437,251729,545835,1,10,118,1425,15775,
 143783,950512,3824282,7087261,1,11,146,2040,27146,
 313920,2854261,17975438,65361237,102247563]