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A001443 as a simple table

n a(n)
1 0
2 0
3 2
4 0
5 4
6 8
7 32
8 224
9 800
10 6660
11 27554
12 158680
13 1201626
14 9415980
15 76761968
16 672858900
17 6015305136
18 59514095596

[0,0,2,0,4,8,32,224,800,6660,27554,158680,1201626,
 9415980,76761968,672858900,6015305136,59514095596]

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Last modified August 1 00:13 EDT 2021. Contains 346377 sequences. (Running on oeis4.)