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A099496 as a simple table

na(n)
01
1-2
25
3-13
434
5-89
6233
7-610
81597
9-4181
1010946
11-28657
1275025
13-196418
14514229
15-1346269
163524578
17-9227465
1824157817
19-63245986
20165580141
21-433494437
221134903170
23-2971215073
247778742049
25-20365011074
2653316291173
27-139583862445
28365435296162
29-956722026041

[1,-2,5,-13,34,-89,233,-610,1597,-4181,10946,
 -28657,75025,-196418,514229,-1346269,3524578,
 -9227465,24157817,-63245986,165580141,-433494437,
 1134903170,-2971215073,7778742049,-20365011074,
 53316291173,-139583862445,365435296162,
 -956722026041]