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A136398 as a simple table

na(n)
61
7-6
82
915
10-13
114
12-20
1336
14-28
158
1615
17-55
1885
19-60
2016
21-6
2250
23-146
24198
25-128
2632
271
28-27
29155
30-377
31456
32-272
3364
348
35-104
36456
37-952
381040
39-576
40128
41-1
4243
43-363
441289
45-2360
462352
47-1216
48256
49-10
50190
51-1182
523530
53-5760
545280
55-2560
56512

[1,-6,2,15,-13,4,-20,36,-28,8,15,-55,85,-60,16,-6,
 50,-146,198,-128,32,1,-27,155,-377,456,-272,64,8,
 -104,456,-952,1040,-576,128,-1,43,-363,1289,-2360,
 2352,-1216,256,-10,190,-1182,3530,-5760,5280,
 -2560,512]