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A343831 as a simple table

na(n)
11
23
3120
42520
551840
62494800
76227020800
8653837184000
927360571392000
1030411275102208000
1151090942171709440000
121846572624206069760000
1315511210043330985984000000
141361108681302294020096000000
158841761993739701954543616000000

[1,3,120,2520,51840,2494800,6227020800,
 653837184000,27360571392000,30411275102208000,
 51090942171709440000,1846572624206069760000,
 15511210043330985984000000,
 1361108681302294020096000000,
 8841761993739701954543616000000]