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A329483
as a simple table
n
a(n)
1
0
2
0
3
0
4
4
5
12
6
28
7
136
8
488
9
2624
10
12420
11
64120
12
313584
13
1675648
14
8536072
[0,0,0,4,12,28,136,488,2624,12420,64120,313584, 1675648,8536072]