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A140412 as a simple table

n a(n)
1 1
2 -12
3 864
4 -41472
5 24883200
6 21499084800
7 -50565847449600
8 9708642710323200
9 -6291200476289433600
10 -45296643429283921920000
11 657707262593202546278400000
12 2273036299522107999938150400000
13 -64536046616031690334243966156800000

[1,-12,864,-41472,24883200,21499084800,
 -50565847449600,9708642710323200,
 -6291200476289433600,-45296643429283921920000,
 657707262593202546278400000,
 2273036299522107999938150400000,
 -64536046616031690334243966156800000]

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Last modified April 24 15:37 EDT 2024. Contains 371960 sequences. (Running on oeis4.)