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A057658 as a simple table

na(n)
00
18640
2172800
31512000
48467200
535562240
6121927680
7359251200
8940896000
92242468800
104947022080
1110231341120
1220033395200
1337425024000
1467118284800
15116138603520
16194702952960
17317346724800
18504348768000
19783510235200

[0,8640,172800,1512000,8467200,35562240,121927680,
 359251200,940896000,2242468800,4947022080,
 10231341120,20033395200,37425024000,67118284800,
 116138603520,194702952960,317346724800,
 504348768000,783510235200]