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A144345 as a simple table

na(n)
01
16
252
3600
48680
5151200
63082240
771998080
81896294400
955601145600
101796277683200
1163397990656000
122427084884224000
13100175046107136000
144434284662872064000
15209554432423784448000
1610530302071553904640000
17560682451860226375680000

[1,6,52,600,8680,151200,3082240,71998080,
 1896294400,55601145600,1796277683200,
 63397990656000,2427084884224000,
 100175046107136000,4434284662872064000,
 209554432423784448000,10530302071553904640000,
 560682451860226375680000]