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A274983 as a simple table

na(n)
02
12
23
314
4130
52120
658120
72636360
8196132320
923805331920
104698862837680
111505416321070640
12781888977967152000
13657866357975539785600
14896265744457831561756800
151976607903479486428467148800
167055269158071576119808840371200

[2,2,3,14,130,2120,58120,2636360,196132320,
 23805331920,4698862837680,1505416321070640,
 781888977967152000,657866357975539785600,
 896265744457831561756800,
 1976607903479486428467148800,
 7055269158071576119808840371200]