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A216254 as a simple table

n a(n)
0 1
1 -2
2 26
3 -502
4 7102
5 -44834
6 295272982
7 -122850554
8 19437784634
9 -83457787614326
10 13505836484182762
11 -83261125331410322
12 1230729837542663167546
13 -279990740971966317602
14 31893076454808467404426

[1,-2,26,-502,7102,-44834,295272982,-122850554,
 19437784634,-83457787614326,13505836484182762,
 -83261125331410322,1230729837542663167546,
 -279990740971966317602,31893076454808467404426]

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Last modified January 21 04:53 EST 2020. Contains 331104 sequences. (Running on oeis4.)