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A257493 as a simple table

na(n)
01
11
21
31
41
51
61
71
82
91
101
111
123
136
141
151
161
174
1821
1924
201
211
221
235
2455
25282
26120
271
281
291
306
31120
322008
336210
34720
351
361
371
387
39231
4010147
41153040
42202410
435040
441
451
461
478
48406
4940176
502224955
5120933840
529135630
5340320
541
551
561
579
58666
59132724
6022069251
611047649905
624662857360
63545007960
64362880
651

[1,1,1,1,1,1,1,1,2,1,1,1,3,6,1,1,1,4,21,24,1,1,1,
 5,55,282,120,1,1,1,6,120,2008,6210,720,1,1,1,7,
 231,10147,153040,202410,5040,1,1,1,8,406,40176,
 2224955,20933840,9135630,40320,1,1,1,9,666,132724,
 22069251,1047649905,4662857360,545007960,362880,1]