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A122600 as a simple table

n a(n)
0 1
1 -3
2 13
3 -52
4 211
5 -854
6 3458
7 -14001
8 56689
9 -229529
10 929344
11 -3762837
12 15235416
13 -61686940
14 249765321
15 -1011279139
16 4094585641
17 -16578638800
18 67125538103
19 -271785755150
20 1100438056662
21 -4455582728689
22 18040286167865
23 -73043627475013
24 295747609825188
25 -1197457625543481

[1,-3,13,-52,211,-854,3458,-14001,56689,-229529,
 929344,-3762837,15235416,-61686940,249765321,
 -1011279139,4094585641,-16578638800,67125538103,
 -271785755150,1100438056662,-4455582728689,
 18040286167865,-73043627475013,295747609825188,
 -1197457625543481]

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Last modified April 21 13:17 EDT 2021. Contains 343153 sequences. (Running on oeis4.)