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A200561 as a simple table

na(n)
12
2-2
36
46
5-10
670
7-42
8102
9374
10-506
112070
12-90
13182
1416198
15-16554
1650406
1746070
18-77690
19573078
20-359898
21884534
222980294
23-4090410
2417127270
25-1465738
262996998
27131089686
28-136821594
29422976950
30352097350
31-600716202
324688726502
33-3073380106
347645103494
3523717948310
36-33014782170
37141611506742

[2,-2,6,6,-10,70,-42,102,374,-506,2070,-90,182,
 16198,-16554,50406,46070,-77690,573078,-359898,
 884534,2980294,-4090410,17127270,-1465738,2996998,
 131089686,-136821594,422976950,352097350,
 -600716202,4688726502,-3073380106,7645103494,
 23717948310,-33014782170,141611506742]