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A109088 as a simple table

n a(n)
0 0
1 1
2 -1
3 -1
4 4
5 -1
6 -11
7 11
8 26
9 -46
10 -70
11 202
12 160
13 -936
14 252
15 3119
16 -4379
17 -3459
18 14888
19 -20536
20 29732
21 38061
22 -479128
23 960501
24 1356685
25 -8916019
26 8540446
27 35338281
28 -110022439
29 5461908
30 570854415
31 -1033426187
32 -1165212555
33 7430011628
34 -6748665176
35 -27528038218
36 81920080445
37 10199574479

[0,1,-1,-1,4,-1,-11,11,26,-46,-70,202,160,-936,
 252,3119,-4379,-3459,14888,-20536,29732,38061,
 -479128,960501,1356685,-8916019,8540446,35338281,
 -110022439,5461908,570854415,-1033426187,
 -1165212555,7430011628,-6748665176,-27528038218,
 81920080445,10199574479]

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Last modified March 28 16:34 EDT 2024. Contains 371254 sequences. (Running on oeis4.)