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A009387 as a simple table

n a(n)
0 0
1 1
2 -1
3 -2
4 10
5 16
6 -232
7 -272
8 10064
9 7936
10 -720384
11 -353792
12 78009600
13 22368256
14 -11977120768
15 -1903757312
16 2480763381760
17 209865342976
18 -666957211828224
19 -29088885112832
20 225809770695098368
21 4951498053124096

[0,1,-1,-2,10,16,-232,-272,10064,7936,-720384,
 -353792,78009600,22368256,-11977120768,
 -1903757312,2480763381760,209865342976,
 -666957211828224,-29088885112832,
 225809770695098368,4951498053124096]

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Last modified July 29 23:58 EDT 2021. Contains 346346 sequences. (Running on oeis4.)