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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 February 24 22:57 EST 2020. Contains 332216 sequences. (Running on oeis4.)