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A242620
as a simple table
n
a(n)
0
0
1
0
2
0
3
0
4
0
5
62264
6
4046803256
7
16382350221535464479
8
339840244399005511779394711120340266111
[0,0,0,0,0,62264,4046803256,16382350221535464479, 339840244399005511779394711120340266111]