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A156540 as a simple table

na(n)
01
11
21
31
41
52
61
71
83
96
101
111
124
1321
1424
151
161
175
1852
19315
20120
211
221
236
24105
252080
269765
27720
281
291
307
31186
328925
33251680
34615195
355040
361
371
388
39301
4029016
413043425
4291611520
4378129765
4440320
451
461
479
48456
4977959
5022661496
514154275125
52100131391360
5319923090075
54362880

[1,1,1,1,1,2,1,1,3,6,1,1,4,21,24,1,1,5,52,315,120,
 1,1,6,105,2080,9765,720,1,1,7,186,8925,251680,
 615195,5040,1,1,8,301,29016,3043425,91611520,
 78129765,40320,1,1,9,456,77959,22661496,
 4154275125,100131391360,19923090075,362880]