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A138476 as a simple table

na(n)
11
20
32
42
50
64
70
82
90
108
11-2
120
130
1416
150
166
170
18-8
190
2032
212
220
23-12
240
25-32
2664
270
2810
290
30-16
310
32-96
330
34128
35-2
360
3732
380
390
400
41-256
420
43256
440
45-14
460
4780
480
4996
500
51-640
520
53512

[1,0,2,2,0,4,0,2,0,8,-2,0,0,16,0,6,0,-8,0,32,2,0,
 -12,0,-32,64,0,10,0,-16,0,-96,0,128,-2,0,32,0,0,0,
 -256,0,256,0,-14,0,80,0,96,0,-640,0,512]