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A077900 as a simple table

na(n)
01
10
23
3-4
411
5-24
655
7-124
8283
9-640
101455
11-3300
127491
13-17000
1438583
15-87564
16198731
17-451024
181023615
19-2323124
205272403
21-11965880
2227156935
23-61633500
24139879131
25-317460000
26720485263
27-1635163524
283711054051
29-8422351624
3019114786775
31-43381598124
3298455874923

[1,0,3,-4,11,-24,55,-124,283,-640,1455,-3300,7491,
 -17000,38583,-87564,198731,-451024,1023615,
 -2323124,5272403,-11965880,27156935,-61633500,
 139879131,-317460000,720485263,-1635163524,
 3711054051,-8422351624,19114786775,-43381598124,
 98455874923]