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A260330 as a simple table

na(n)
01
10
22
30
45
50
614
7-4
842
9-20
10126
11-100
12400
13-376
141248
15-1556
164231
17-5588
1813880
19-21912
2048985
21-76404
22165712
23-295660
24602237
25-1017452
262072268
27-3935956
287665833
29-13411588
3026634782
31-52362292
3299567378
33-176237580
34348090340
35-699582108

[1,0,2,0,5,0,14,-4,42,-20,126,-100,400,-376,1248,
 -1556,4231,-5588,13880,-21912,48985,-76404,165712,
 -295660,602237,-1017452,2072268,-3935956,7665833,
 -13411588,26634782,-52362292,99567378,-176237580,
 348090340,-699582108]