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A291974 as a simple table

n a(n)
0 1
1 -1
2 9
3 -197
4 6841
5 -254801
6 -3000807
7 3691567683
8 -717149457463
9 -3166484321001
10 70729161470807849
11 -27375562310313650357
12 -6307300288015827588199
13 14726712291264935798753279
14 -4956785715421801286491780487
15 -9984523503726123391084330853037

[1,-1,9,-197,6841,-254801,-3000807,3691567683,
 -717149457463,-3166484321001,70729161470807849,
 -27375562310313650357,-6307300288015827588199,
 14726712291264935798753279,
 -4956785715421801286491780487,
 -9984523503726123391084330853037]

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Last modified September 28 12:47 EDT 2022. Contains 357070 sequences. (Running on oeis4.)