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A343206 as a simple table

n a(n)
0 1
1 -1
2 2
3 -3
4 24
5 -20
6 720
7 -630
8 4480
9 -36288
10 3628800
11 -3326400
12 479001600
13 -444787200
14 5811886080
15 -81729648000
16 20922789888000
17 -19760412672000
18 6402373705728000
19 -6082255020441600
20 115852476579840000
21 -2322315553259520000
22 1124000727777607680000
23 -1077167364120207360000

[1,-1,2,-3,24,-20,720,-630,4480,-36288,3628800,
 -3326400,479001600,-444787200,5811886080,
 -81729648000,20922789888000,-19760412672000,
 6402373705728000,-6082255020441600,
 115852476579840000,-2322315553259520000,
 1124000727777607680000,-1077167364120207360000]

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Last modified August 24 20:58 EDT 2024. Contains 375417 sequences. (Running on oeis4.)