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A052522 as a simple table

n a(n)
0 0
1 1
2 0
3 2
4 6
5 64
6 540
7 6908
8 93744
9 1542616
10 28057800
11 576840032
12 13029824016
13 323152349584
14 8698499671680
15 252998272144928
16 7900336700736864
17 263731233726459136
18 9370598887948893120
19 353114271843930110912

[0,1,0,2,6,64,540,6908,93744,1542616,28057800,
 576840032,13029824016,323152349584,8698499671680,
 252998272144928,7900336700736864,
 263731233726459136,9370598887948893120,
 353114271843930110912]

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Last modified July 1 21:27 EDT 2022. Contains 354975 sequences. (Running on oeis4.)