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A136502 as a simple table

na(n)
01
1-1
21
32
4-2
51
6-7
77
8-4
91
1044
11-44
1226
13-8
141
15-516
16516
17-308
18100
19-16
201
2111622
22-11622
236959
24-2296
25392
26-32
271
28-512022
29512022
30-306888
31101754
32-17712
331552
34-64
351
3644588536
37-44588536
3826732904
39-8877272
401554404
41-139104
426176
43-128
441

[1,-1,1,2,-2,1,-7,7,-4,1,44,-44,26,-8,1,-516,516,
 -308,100,-16,1,11622,-11622,6959,-2296,392,-32,1,
 -512022,512022,-306888,101754,-17712,1552,-64,1,
 44588536,-44588536,26732904,-8877272,1554404,
 -139104,6176,-128,1]