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A054765 as a simple table

na(n)
00
11
23
319
4160
51744
623184
7364176
86598656
9135484416
103108695040
1178831037440
122189265960960
1366083318415360
142154235544616960
1575425161203302400
162822882994841190400
17112463980097804697600

[0,1,3,19,160,1744,23184,364176,6598656,135484416,
 3108695040,78831037440,2189265960960,
 66083318415360,2154235544616960,75425161203302400,
 2822882994841190400,112463980097804697600]