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A048642 as a simple table

na(n)
01
11
23
36
436
5252
61260
75040
860480
9786240
1011793600
11165110400
121651104000
1318162144000
14163459296000
151307674368000
1631384184832000
17784604620800000
1821184324761600000
19550792443801600000
2016523773314048000000

[1,1,3,6,36,252,1260,5040,60480,786240,11793600,
 165110400,1651104000,18162144000,163459296000,
 1307674368000,31384184832000,784604620800000,
 21184324761600000,550792443801600000,
 16523773314048000000]