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A158260 as a simple table

na(n)
21
32
430
52240
6685160
7810903456
83683654668512
964657586863790400
104426882384548801561472
111192052411353154132337483776
121270174918862853255008627489608704

[1,2,30,2240,685160,810903456,3683654668512,
 64657586863790400,4426882384548801561472,
 1192052411353154132337483776,
 1270174918862853255008627489608704]