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A066121 as a simple table

na(n)
11
22
31
43
52
61
74
86
92
101
115
1224
1312
142
151
166
17120
18288
1924
202
211
227
23720
2434560
256912
2648
272
281
298
305040
3124883200
32238878720
33331776
3496
352
361
379
3840320
39125411328000
405944066965504000
4179254226206720
4231850496
43192
442
451
4610
47362880

[1,2,1,3,2,1,4,6,2,1,5,24,12,2,1,6,120,288,24,2,1,
 7,720,34560,6912,48,2,1,8,5040,24883200,238878720,
 331776,96,2,1,9,40320,125411328000,
 5944066965504000,79254226206720,31850496,192,2,1,
 10,362880]