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A077910 as a simple table

na(n)
01
10
2-1
34
4-1
5-8
619
7-4
8-49
996
10-5
11-284
12487
1372
14-1613
152444
16927
17-9040
1812075
197860
20-50089
2158520
2257379
23-274596
24276879
25387072
26-1490021
271269636
282484551
29-8003864
305574035
3115402796
32-42558593
3322901072
3493021707
35-223941036
3683699767
37550225720
38-1165507325

[1,0,-1,4,-1,-8,19,-4,-49,96,-5,-284,487,72,-1613,
 2444,927,-9040,12075,7860,-50089,58520,57379,
 -274596,276879,387072,-1490021,1269636,2484551,
 -8003864,5574035,15402796,-42558593,22901072,
 93021707,-223941036,83699767,550225720,
 -1165507325]