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A012057 as a simple table

n a(n)
0 1
1 0
2 4
3 -80
4 -3440
5 -764800
6 -107953600
7 -25833184000
8 -6745073504000
9 -2368021859840000
10 -968030415297920000
11 -487629248007416320000
12 -285882353240737277440000
13 -197729299896592542208000000

[1,0,4,-80,-3440,-764800,-107953600,-25833184000,
 -6745073504000,-2368021859840000,
 -968030415297920000,-487629248007416320000,
 -285882353240737277440000,
 -197729299896592542208000000]

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Last modified April 19 21:09 EDT 2024. Contains 371798 sequences. (Running on oeis4.)