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A154280 as a simple table

na(n)
00
11
21
31
42
51
64
72
86
94
109
1112
1213
1348
1417
15192
1621
17768
1826
193840
2032
2123040
2239
23161280
2446
251128960
2654
279031680
2862
2972253440
3070
31578027520
3278
334624220160
3487
3541617981440
3697
37416179814400
38108
394577977958400
40120
4154935735500800
42132

[0,1,1,1,2,1,4,2,6,4,9,12,13,48,17,192,21,768,26,
 3840,32,23040,39,161280,46,1128960,54,9031680,62,
 72253440,70,578027520,78,4624220160,87,
 41617981440,97,416179814400,108,4577977958400,120,
 54935735500800,132]