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A162005 as a simple table

na(n)
11
22
31
416
528
61
7272
81032
9270
101
117936
1252736
1336096
142456
151
16353792
173646208
184766048
191035088
2022138
211
2222368256
23330545664
24704357760
25319830400
2627426960
27199284
281
291903757312
3038188155904
31120536980224
3293989648000

[1,2,1,16,28,1,272,1032,270,1,7936,52736,36096,
 2456,1,353792,3646208,4766048,1035088,22138,1,
 22368256,330545664,704357760,319830400,27426960,
 199284,1,1903757312,38188155904,120536980224,
 93989648000]