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A105576 as a simple table

na(n)
03
14
20
3-6
4-4
510
620
72
8-36
9-38
1036
11114
1244
13-182
14-268
1598
16636
17442
18-828
19-1710
20-52
213370
223476
23-3262
24-10212
25-3686
2616740
2724114
28-9364
29-57590
30-38860
3176322
32154044
331402
34-306684
35-309486
36303884
37922858
38315092
39-1530622
40-2160804
41900442
425222052
433421170

[3,4,0,-6,-4,10,20,2,-36,-38,36,114,44,-182,-268,
 98,636,442,-828,-1710,-52,3370,3476,-3262,-10212,
 -3686,16740,24114,-9364,-57590,-38860,76322,
 154044,1402,-306684,-309486,303884,922858,315092,
 -1530622,-2160804,900442,5222052,3421170]