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A318297 as a simple table

na(n)
11
218
32760
41153488
5928609920
61224288172800
72398694768870400
86543329233529088000
923715268426751879577600
10110245593949982051033088000
11639537254337962130647777280000
124528740191242360945670704005120000
1338446695454134018174768929636352000000

[1,18,2760,1153488,928609920,1224288172800,
 2398694768870400,6543329233529088000,
 23715268426751879577600,
 110245593949982051033088000,
 639537254337962130647777280000,
 4528740191242360945670704005120000,
 38446695454134018174768929636352000000]