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A308397 as a simple table

n a(n)
0 1
1 1
2 -1
3 -5
4 7
5 71
6 -59
7 -1511
8 -9295
9 -1583
10 861751
11 4039091
12 -80670281
13 -606807785
14 7674244397
15 78614840641
16 1146707474401
17 12874145737889
18 -1054507266321425
19 -19048413877999253
20 238097060642380391
21 6646823785301856871
22 -59731575523361439851
23 -2231444370433747995415

[1,1,-1,-5,7,71,-59,-1511,-9295,-1583,861751,
 4039091,-80670281,-606807785,7674244397,
 78614840641,1146707474401,12874145737889,
 -1054507266321425,-19048413877999253,
 238097060642380391,6646823785301856871,
 -59731575523361439851,-2231444370433747995415]

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Last modified June 16 02:14 EDT 2021. Contains 345055 sequences. (Running on oeis4.)