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A078475 as a simple table

na(n)
11
2-2
315
4-594
5-5187
623244
7122475
8-279292
9-1157143
101850930
116642839
12-8529278
13-27810555
1430741424
1593575187
16-92784984
17-268191855
18244875462
19679807583
20-581798410
21-1563707379
221270245108
233324627195
24-2587197204
25-6623079687
264972012474
2712491212135

[1,-2,15,-594,-5187,23244,122475,-279292,-1157143,
 1850930,6642839,-8529278,-27810555,30741424,
 93575187,-92784984,-268191855,244875462,679807583,
 -581798410,-1563707379,1270245108,3324627195,
 -2587197204,-6623079687,4972012474,12491212135]