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A284995 as a simple table

na(n)
12
21
31
41
52
62
74
86
912
1024
1153
12120
13288
14720
151872
165040
1714035
1840320
19119293
20362880
211133279
223628800
2311899424
2439916800
25136843366
26479001600
271710542069
286227020800
2923092317923
3087178291200
31334838609874
321307674368000
335189998453041

[2,1,1,1,2,2,4,6,12,24,53,120,288,720,1872,5040,
 14035,40320,119293,362880,1133279,3628800,
 11899424,39916800,136843366,479001600,1710542069,
 6227020800,23092317923,87178291200,334838609874,
 1307674368000,5189998453041]