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A009170 as a simple table

n a(n)
0 1
1 -1
2 2
3 -4
4 0
5 24
6 8
7 -456
8 192
9 11264
10 -20480
11 -289664
12 1837696
13 -3000960
14 -187743488
15 2697206272
16 22698672128
17 -625547980800
18 -3236847570944
19 138214081974272
20 536307107184640
21 -32824743592198144
22 -101121059849109504

[1,-1,2,-4,0,24,8,-456,192,11264,-20480,-289664,
 1837696,-3000960,-187743488,2697206272,
 22698672128,-625547980800,-3236847570944,
 138214081974272,536307107184640,
 -32824743592198144,-101121059849109504]

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Last modified July 22 09:18 EDT 2024. Contains 374485 sequences. (Running on oeis4.)