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A012056 as a simple table

n a(n)
0 1
1 2
2 16
3 216
4 -1280
5 -1141504
6 -263392128
7 -64804059904
8 -18858549039104
9 -6592583427379200
10 -2757743938862710784
11 -1367930584522073079808
12 -796483574916192660455424
13 -539009967859883250211815424

[1,2,16,216,-1280,-1141504,-263392128,
 -64804059904,-18858549039104,-6592583427379200,
 -2757743938862710784,-1367930584522073079808,
 -796483574916192660455424,
 -539009967859883250211815424]

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Last modified January 27 03:09 EST 2022. Contains 350601 sequences. (Running on oeis4.)