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A343576 as a simple table

na(n)
01
10
21
32
49
524
6175
7720
86405
942560
10436401
113628800
1248073795
13479001600
147116730335
1588966701824
161474541093025
1720922789888000
18400160588853025
196402373705728000
20133991603578884051
212457732174030848000
2255735573291977790575
231124000727777607680000

[1,0,1,2,9,24,175,720,6405,42560,436401,3628800,
 48073795,479001600,7116730335,88966701824,
 1474541093025,20922789888000,400160588853025,
 6402373705728000,133991603578884051,
 2457732174030848000,55735573291977790575,
 1124000727777607680000]