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A009169 as a simple table

n a(n)
0 1
1 0
2 1
3 -3
4 4
5 20
6 -224
7 1344
8 -5144
9 -4320
10 356896
11 -4755520
12 42368536
13 -207434448
14 -1593929336
15 61487349000
16 -997231605824
17 9976381236224
18 -16539522000704
19 -1929601048449600
20 51992648244966016
21 -800205465246136320

[1,0,1,-3,4,20,-224,1344,-5144,-4320,356896,
 -4755520,42368536,-207434448,-1593929336,
 61487349000,-997231605824,9976381236224,
 -16539522000704,-1929601048449600,
 51992648244966016,-800205465246136320]

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Last modified July 22 14:07 EDT 2024. Contains 374499 sequences. (Running on oeis4.)