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A156864 as a simple table

na(n)
10
2-1
31
4-2
5-2
64
7-3
8-6
9-2
1011
11-4
12-11
13-12
141
1526
16-5
17-17
18-27
19-19
2011
2157
22-6
23-24
24-48
25-54
26-24
2736
28120
29-7
30-32
31-76
32-110
33-94
34-20
3592
36247
37-8
38-41
39-112
40-194
41-220
42-146
438
44211
45502
46-9
47-51
48-157
49-314
50-430
51-398
52-202
5391
54457
551013

[0,-1,1,-2,-2,4,-3,-6,-2,11,-4,-11,-12,1,26,-5,
 -17,-27,-19,11,57,-6,-24,-48,-54,-24,36,120,-7,
 -32,-76,-110,-94,-20,92,247,-8,-41,-112,-194,-220,
 -146,8,211,502,-9,-51,-157,-314,-430,-398,-202,91,
 457,1013]