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A131589 as a simple table

n a(n)
0 -3
1 3
2 -2
3 -1
4 9
5 -30
6 85
7 -229
8 606
9 -1593
10 4177
11 -10942
12 28653
13 -75021
14 196414
15 -514225
16 1346265
17 -3524574
18 9227461
19 -24157813
20 63245982
21 -165580137
22 433494433
23 -1134903166
24 2971215069
25 -7778742045
26 20365011070
27 -53316291169
28 139583862441
29 -365435296158
30 956722026037

[-3,3,-2,-1,9,-30,85,-229,606,-1593,4177,-10942,
 28653,-75021,196414,-514225,1346265,-3524574,
 9227461,-24157813,63245982,-165580137,433494433,
 -1134903166,2971215069,-7778742045,20365011070,
 -53316291169,139583862441,-365435296158,
 956722026037]

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Last modified April 25 08:27 EDT 2024. Contains 371964 sequences. (Running on oeis4.)