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A170760 as a simple table

na(n)
01
141
21640
365600
42624000
5104960000
64198400000
7167936000000
86717440000000
9268697600000000
1010747904000000000
11429916160000000000
1217196646400000000000
13687865856000000000000
1427514634240000000000000
151100585369600000000000000

[1,41,1640,65600,2624000,104960000,4198400000,
 167936000000,6717440000000,268697600000000,
 10747904000000000,429916160000000000,
 17196646400000000000,687865856000000000000,
 27514634240000000000000,1100585369600000000000000]