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A349452 as a simple table

na(n)
11
2-2
3-4
4-4
5-16
6-16
7-64
8-104
9-240
10-448
11-1024
12-1904
13-4096
14-7936
15-16256
16-32272
17-65536
18-129888
19-262144
20-522176
21-1048064
22-2093056
23-4194304
24-8379520
25-16776960
26-33538048
27-67106880
28-134184704
29-268435456
30-536801024
31-1073741824
32-2147352224
33-4294959104
34-8589672448
35-17179867136
36-34359197184

[1,-2,-4,-4,-16,-16,-64,-104,-240,-448,-1024,
 -1904,-4096,-7936,-16256,-32272,-65536,-129888,
 -262144,-522176,-1048064,-2093056,-4194304,
 -8379520,-16776960,-33538048,-67106880,-134184704,
 -268435456,-536801024,-1073741824,-2147352224,
 -4294959104,-8589672448,-17179867136,-34359197184]