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A174451 as a simple table

na(n)
01
11
21
31
418
51
61
736
836
91
101
1160
122160
1360
141
151
1690
175400
185400
1990
201
211
22126
2311340
24680400
2511340
26126
271
281
29168
3021168
311905120
321905120
3321168
34168
351
361
37216
3836288
394572288
40411505920
414572288
4236288
43216
441
451
46270
4758320
489797760
491234517760
501234517760
519797760
5258320
53270
541

[1,1,1,1,18,1,1,36,36,1,1,60,2160,60,1,1,90,5400,
 5400,90,1,1,126,11340,680400,11340,126,1,1,168,
 21168,1905120,1905120,21168,168,1,1,216,36288,
 4572288,411505920,4572288,36288,216,1,1,270,58320,
 9797760,1234517760,1234517760,9797760,58320,270,1]