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A008316 as a simple table

na(n)
01
11
2-1
33
4-3
55
63
7-30
835
915
10-70
1163
12-5
13105
14-315
15231
16-35
17315
18-693
19429
2035
21-1260
226930
23-12012
246435
25315
26-4620
2718018
28-25740
2912155
30-63
313465
32-30030
3390090
34-109395
3546189
36-693
3715015
38-90090
39218790
40-230945
4188179
42231
43-18018
44225225
45-1021020
462078505
47-1939938
48676039

[1,1,-1,3,-3,5,3,-30,35,15,-70,63,-5,105,-315,231,
 -35,315,-693,429,35,-1260,6930,-12012,6435,315,
 -4620,18018,-25740,12155,-63,3465,-30030,90090,
 -109395,46189,-693,15015,-90090,218790,-230945,
 88179,231,-18018,225225,-1021020,2078505,-1939938,
 676039]