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A140230 as a simple table

na(n)
11
23
32
4-6
5-20
6-28
7-8
856
9144
10176
1132
12-352
13-832
14-960
15-128
161920
174352
184864
19512
20-9728
21-21504
22-23552
23-2048
2447104
25102400
26110592
278192
28-221184
29-475136
30-507904
31-32768
321015808
332162688
342293760
35131072
36-4587520
37-9699328

[1,3,2,-6,-20,-28,-8,56,144,176,32,-352,-832,-960,
 -128,1920,4352,4864,512,-9728,-21504,-23552,-2048,
 47104,102400,110592,8192,-221184,-475136,-507904,
 -32768,1015808,2162688,2293760,131072,-4587520,
 -9699328]