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A350022
as a simple table
n
a(n)
1
1
2
0
3
1
4
2
5
0
6
0
7
480
8
0
9
2274048
10
757555200
11
4693077997977600
[1,0,1,2,0,0,480,0,2274048,757555200, 4693077997977600]
