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A288188 as a simple table

na(n)
11
28
3-7
464
5-84
621
7512
8-896
9224
10196
11-35
124096
13-8960
142240
153920
16-350
17-980
1835
1932768
20-86016
2121504
2256448
23-3360
24-18816
25336
26-5488
271470
281176
29-21
30262144
31-802816
32200704
33702464
34-31360
35-263424
363136
37-153664
3827440
3921952
40-196
4138416
42-1372
43-3430
447

[1,8,-7,64,-84,21,512,-896,224,196,-35,4096,-8960,
 2240,3920,-350,-980,35,32768,-86016,21504,56448,
 -3360,-18816,336,-5488,1470,1176,-21,262144,
 -802816,200704,702464,-31360,-263424,3136,-153664,
 27440,21952,-196,38416,-1372,-3430,7]