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A178072 as a simple table

na(n)
01
10
2-1
3-1
4-1
5-1
61
78
823
945
1055
11-14
12-317
13-1095
14-2459
15-3574
16-681
1716124
1864605
19159483
20260869
21134374
22-906919
23-4228769
24-11317061
25-20327731
26-15742753
2752640154
28293447719
29847451759
301648865921
311636313816
32-2986606297
33-21074495982

[1,0,-1,-1,-1,-1,1,8,23,45,55,-14,-317,-1095,
 -2459,-3574,-681,16124,64605,159483,260869,134374,
 -906919,-4228769,-11317061,-20327731,-15742753,
 52640154,293447719,847451759,1648865921,
 1636313816,-2986606297,-21074495982]