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A320392
as a simple table
n
a(n)
0
1
1
1
2
0
3
0
4
4
5
4
6
10
7
24
8
252
9
410
10
1998
11
7798
12
65188
13
280582
14
2281108
15
10585748
16
110903088
[1,1,0,0,4,4,10,24,252,410,1998,7798,65188,280582, 2281108,10585748,110903088]
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Last modified May 13 16:16 EDT 2024. Contains 372522 sequences. (Running on oeis4.)