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A127511 as a simple table

na(n)
11
2-2
3-4
40
5-16
632
7-64
80
90
10512
11-1024
120
13-4096
148192
1516384
160
17-65536
180
19-262144
200
211048576
222097152
23-4194304
240
250
2633554432
270
280
29-268435456
30-536870912
31-1073741824
320
334294967296
348589934592
3517179869184
360
37-68719476736
38137438953472
39274877906944
400
41-1099511627776

[1,-2,-4,0,-16,32,-64,0,0,512,-1024,0,-4096,8192,
 16384,0,-65536,0,-262144,0,1048576,2097152,
 -4194304,0,0,33554432,0,0,-268435456,-536870912,
 -1073741824,0,4294967296,8589934592,17179869184,0,
 -68719476736,137438953472,274877906944,0,
 -1099511627776]