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A163747 as a simple table

n a(n)
0 0
1 -1
2 -1
3 2
4 5
5 -16
6 -61
7 272
8 1385
9 -7936
10 -50521
11 353792
12 2702765
13 -22368256
14 -199360981
15 1903757312
16 19391512145
17 -209865342976
18 -2404879675441
19 29088885112832
20 370371188237525
21 -4951498053124096
22 -69348874393137901

[0,-1,-1,2,5,-16,-61,272,1385,-7936,-50521,353792,
 2702765,-22368256,-199360981,1903757312,
 19391512145,-209865342976,-2404879675441,
 29088885112832,370371188237525,-4951498053124096,
 -69348874393137901]

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Last modified July 24 04:25 EDT 2021. Contains 346273 sequences. (Running on oeis4.)