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A280115 as a simple table

na(n)
11
23
312
4132
5792
633264
7266112
819958400
9618710400
1066820723200
11801848678400
121425686950195200
1319959617302732800
144111681164362956800
15962133392460931891200
161057384598314564148428800
1719032922769662154671718400
18112313277263776374717810278400

[1,3,12,132,792,33264,266112,19958400,618710400,
 66820723200,801848678400,1425686950195200,
 19959617302732800,4111681164362956800,
 962133392460931891200,1057384598314564148428800,
 19032922769662154671718400,
 112313277263776374717810278400]