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A305540 as a simple table

na(n)
11
21
31
41
52
61
74
83
91
106
116
121
1310
1421
1512
161
1714
1836
1924
201
2122
2293
23132
2460
251
2630
27150
28240
29120
301
3146
32345
33900
34960
35360
361
3762
38540
391560
401800
41720
421
4394
441173
454980
469300
477920
482520
491
50126
511806
528400
5316800
5415120
555040
561
57190
583801
5924612
6071400
61103320
6273080
6320160
641
65254
665796
6740824
68126000
69191520
70141120
7140320

[1,1,1,1,2,1,4,3,1,6,6,1,10,21,12,1,14,36,24,1,22,
 93,132,60,1,30,150,240,120,1,46,345,900,960,360,1,
 62,540,1560,1800,720,1,94,1173,4980,9300,7920,
 2520,1,126,1806,8400,16800,15120,5040,1,190,3801,
 24612,71400,103320,73080,20160,1,254,5796,40824,
 126000,191520,141120,40320]