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A159493 as a simple table

n a(n)
0 1
1 -1
2 -11
3 35
4 2669
5 -2905
6 -419861
7 461195
8 61671509
9 -122277169
10 -44615461705
11 49182223475
12 888923348608559
13 -28003152594313
14 -1297098519768947
15 21453461722720475
16 96520011267489057013
17 -21285615043272176737
18 -168568774892764486508567

[1,-1,-11,35,2669,-2905,-419861,461195,61671509,
 -122277169,-44615461705,49182223475,
 888923348608559,-28003152594313,-1297098519768947,
 21453461722720475,96520011267489057013,
 -21285615043272176737,-168568774892764486508567]

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Last modified February 1 14:40 EST 2023. Contains 359993 sequences. (Running on oeis4.)