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A147852 as a simple table

na(n)
00
11
22
33
46
510
618
732
854
994
10158
11262
12430
13682
141054
151554
162126
172554
182158
19-710
20-9874
21-33782
22-90322
23-216694
24-488530
25-1057206
26-2221906
27-4566678
28-9220498
29-18345462
30-36046738
31-70057814
32-134836562
33-257215734

[0,1,2,3,6,10,18,32,54,94,158,262,430,682,1054,
 1554,2126,2554,2158,-710,-9874,-33782,-90322,
 -216694,-488530,-1057206,-2221906,-4566678,
 -9220498,-18345462,-36046738,-70057814,-134836562,
 -257215734]