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A099211 as a simple table

n a(n)
0 1
1 -2
2 4
3 -4
4 0
5 16
6 -48
7 96
8 -128
9 64
10 256
11 -1024
12 2304
13 -3584
14 3072
15 3072
16 -20480
17 53248
18 -94208
19 106496
20 0
21 -376832
22 1179648
23 -2359296
24 3211264
25 -1703936
26 -6029312
27 24903680
28 -56623104
29 89128960
30 -78643200
31 -69206016

[1,-2,4,-4,0,16,-48,96,-128,64,256,-1024,2304,
 -3584,3072,3072,-20480,53248,-94208,106496,0,
 -376832,1179648,-2359296,3211264,-1703936,
 -6029312,24903680,-56623104,89128960,-78643200,
 -69206016]

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Last modified December 3 05:05 EST 2021. Contains 349445 sequences. (Running on oeis4.)