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A025278 as a simple table

na(n)
11
2-1
31
41
50
6-1
70
83
94
100
11-2
1211
1334
1436
1514
1655
17250
18484
19526
20672
212024
225106
238388
2411415
2521806
2653222
27107954
28176392
29295988
30615242
311316100
322462955
334271142
348015318
3516478474
3632815776
3760660164
38111589258
39218042964
40436588372

[1,-1,1,1,0,-1,0,3,4,0,-2,11,34,36,14,55,250,484,
 526,672,2024,5106,8388,11415,21806,53222,107954,
 176392,295988,615242,1316100,2462955,4271142,
 8015318,16478474,32815776,60660164,111589258,
 218042964,436588372]