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A230880 as a simple table

na(n)
01
12
28
380
41120
520544
6463744
712422656
8384947200
913541822464
10533049493504
1123210958688256
121107652218822656
1357482801016422400
143223015475535380480
15194157345516262588416
1612505948470244176953344
17857670052436844788318208
1862395270194815987194789888

[1,2,8,80,1120,20544,463744,12422656,384947200,
 13541822464,533049493504,23210958688256,
 1107652218822656,57482801016422400,
 3223015475535380480,194157345516262588416,
 12505948470244176953344,857670052436844788318208,
 62395270194815987194789888]