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A217474 as a simple table

n a(n)
0 -1
1 2
2 -14
3 278
4 -15016
5 2172632
6 -835765304
7 851104689248
8 -2288258540319136
9 16212819419809777952
10 -302332135138133434911104
11 14824259801049378686209605248
12 -1909922987705772492088576593195136
13 646210649409632730922299328304587407872

[-1,2,-14,278,-15016,2172632,-835765304,
 851104689248,-2288258540319136,
 16212819419809777952,-302332135138133434911104,
 14824259801049378686209605248,
 -1909922987705772492088576593195136,
 646210649409632730922299328304587407872]

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Last modified September 26 23:42 EDT 2021. Contains 347673 sequences. (Running on oeis4.)