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A155856 as a simple table

na(n)
01
11
21
32
43
51
66
710
86
91
1024
1142
1230
1310
141
15120
16216
17168
1870
1915
201
21720
221320
231080
24504
25140
2621
271
285040
299360
307920
313960
321260
33252
3428
351
3640320
3775600
3865520
3934320
4011880
412772
42420
4336
441
45362880
46685440
47604800
48327600
49120120
5030888
515544
52660
5345
541

[1,1,1,2,3,1,6,10,6,1,24,42,30,10,1,120,216,168,
 70,15,1,720,1320,1080,504,140,21,1,5040,9360,7920,
 3960,1260,252,28,1,40320,75600,65520,34320,11880,
 2772,420,36,1,362880,685440,604800,327600,120120,
 30888,5544,660,45,1]