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A106691 as a simple table

na(n)
01
1-3
28
3-17
436
5-71
6140
7-269
8516
9-979
101852
11-3481
126516
13-12127
1422444
15-41253
1675236
17-135915
18242716
19-427185
20737876
21-1242743
222019468
23-3106877
244349636
25-4971011
262485500
279942071
28-49710284
29159072881
30-437450388
311113510059
32-2704238684
336362914533
34-14634703396

[1,-3,8,-17,36,-71,140,-269,516,-979,1852,-3481,
 6516,-12127,22444,-41253,75236,-135915,242716,
 -427185,737876,-1242743,2019468,-3106877,4349636,
 -4971011,2485500,9942071,-49710284,159072881,
 -437450388,1113510059,-2704238684,6362914533,
 -14634703396]