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A320591 as a simple table

na(n)
01
11
20
31
4-2
54
6-7
711
8-16
923
10-36
1165
12-129
13256
14-473
15772
16-1028
17835
18776
19-5755
2017562
21-41750
2286678
23-165145
24299949
25-541837
261020029
27-2068203
284509512
29-10252952
3023465297
31-52762788
32115160832
33-243018459
34496094524
35-982431070
361894710043
37-3574095362

[1,1,0,1,-2,4,-7,11,-16,23,-36,65,-129,256,-473,
 772,-1028,835,776,-5755,17562,-41750,86678,
 -165145,299949,-541837,1020029,-2068203,4509512,
 -10252952,23465297,-52762788,115160832,-243018459,
 496094524,-982431070,1894710043,-3574095362]