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A167401 as a simple table

na(n)
21
31
42
51
612
71
84
93
1020
111
1272
131
1428
1545
168
171
18108
191
20160
2163
2244
231
24288
255
2652
279
28224
291
3010800
311
3216
3399
3468
35175
36864
371
3876
39117
40800
411
4221168
431
44352
45675
4692
471
481152
497
50400
51153
52416
531
54648
55275
561568
57171
58116
591
60259200

[1,1,2,1,12,1,4,3,20,1,72,1,28,45,8,1,108,1,160,
 63,44,1,288,5,52,9,224,1,10800,1,16,99,68,175,864,
 1,76,117,800,1,21168,1,352,675,92,1,1152,7,400,
 153,416,1,648,275,1568,171,116,1,259200]