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A329496型作为一个简单的表

n个a(n)
11
21
2
4
58
660
7240
82520
940320
10181440
11725760
12266112
1395800320
1417791488
151585059840
16130767436800
171394852659200
1835568742809600
1920324995891200
2012164510040883200
2169511485947904000
225109094217170944000
2332114306507931648000

[1,1,2,3,8,60,240,2520,40320,181440,725760,266112,95800320,17791488,1585059840,130767436800,1394852659200,35568742809600,20324995891200,12164510040883200,69511485947904000,5109094217170944000,32114306507931648000]