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A308498 as a simple table

na(n)
11
22
31
46
55
61
724
827
910
101
11120
12168
1388
1417
151
16720
171200
18800
19225
2026
211
225040
239720
247800
252850
26486
2737
281
2940320
3088200
3182320
3236750
338232
34931
3550
361
37362880
38887040
39940800
40493920
41136416
4220384
431632
4465
451
463628800
479797760
4811612160
496985440

[1,2,1,6,5,1,24,27,10,1,120,168,88,17,1,720,1200,
 800,225,26,1,5040,9720,7800,2850,486,37,1,40320,
 88200,82320,36750,8232,931,50,1,362880,887040,
 940800,493920,136416,20384,1632,65,1,3628800,
 9797760,11612160,6985440]