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A012271 as a simple table

n a(n)
0 0
1 0
2 2
3 -6
4 22
5 -100
6 428
7 -1008
8 -12504
9 325152
10 -5267448
11 72020520
12 -835748520
13 6577169040
14 36671947440
15 -3513587807520
16 114499586712000
17 -2893590831936000
18 61563908486205600
19 -1035793335840588000

[0,0,2,-6,22,-100,428,-1008,-12504,325152,
 -5267448,72020520,-835748520,6577169040,
 36671947440,-3513587807520,114499586712000,
 -2893590831936000,61563908486205600,
 -1035793335840588000]

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Last modified September 9 06:59 EDT 2024. Contains 375762 sequences. (Running on oeis4.)