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A128047 as a simple table

na(n)
11
2-2
33
4-5
51
65
7-8
8-6
98
107
11-11
12-18
132
1419
159
16-14
17-35
18-20
1925
2034
2111
22-17
23-57
24-65
255
266953
2713

[1,-2,3,-5,1,5,-8,-6,8,7,-11,-18,2,19,9,-14,-35,
 -20,25,34,11,-17,-57,-65,5,6953,13]