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A058556 as a simple table

na(n)
-11
0-6
1-7
2-14
3-20
4-42
5-55
6-112
7-139
8-252
9-314
10-524
11-678
12-1042
13-1335
14-1980
15-2553
16-3688
17-4681
18-6592
19-8341
20-11520
21-14557
22-19626
23-24692
24-32834
25-41135
26-54016
27-67279
28-87328
29-108285
30-139176
31-171984
32-218808
33-269296
34-339844
35-416715
36-522236
37-637642
38-793736

[1,-6,-7,-14,-20,-42,-55,-112,-139,-252,-314,-524,
 -678,-1042,-1335,-1980,-2553,-3688,-4681,-6592,
 -8341,-11520,-14557,-19626,-24692,-32834,-41135,
 -54016,-67279,-87328,-108285,-139176,-171984,
 -218808,-269296,-339844,-416715,-522236,-637642,
 -793736]