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A328774 as a simple table

na(n)
11
21
31
41
52
6-2
74
8-3
94
10-7
1114
12-21
1330
14-38
1550
16-79
17128
18-190
19286
20-419
21598
22-895
231386
24-2121
253178
26-4733
277122
28-10796
2916414
30-25011
3138056
32-57722
3387568
34-133308
35203618
36-311318
37475536
38-726069
391109718
40-1698185
412601166
42-3987305
436114666
44-9378656
4514389676

[1,1,1,1,2,-2,4,-3,4,-7,14,-21,30,-38,50,-79,128,
 -190,286,-419,598,-895,1386,-2121,3178,-4733,7122,
 -10796,16414,-25011,38056,-57722,87568,-133308,
 203618,-311318,475536,-726069,1109718,-1698185,
 2601166,-3987305,6114666,-9378656,14389676]