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A077540 as a simple table

na(n)
12
2120
35040
45765760
539070080
65967561600
766902793897139200
814792260407724800
9106137499051584000
10195333707771834926694400
11131478134374795266938880000
12912197279957973412118937661440000

[2,120,5040,5765760,39070080,5967561600,
 66902793897139200,14792260407724800,
 106137499051584000,195333707771834926694400,
 131478134374795266938880000,
 912197279957973412118937661440000]