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A012402 as a simple table

n a(n)
2 2
3 -3
4 0
5 -10
6 88
7 336
8 -5040
9 5256
10 202752
11 -2094840
12 26943840
13 -534147120
14 7877529840
15 -41350410360
16 -804692528640
17 16885512006720
18 -166653340523520
19 3621340758072960
20 -48704381263560960
21 -2035821123825148800
22 99959690241598844160
23 -1979439236443512264960

[2,-3,0,-10,88,336,-5040,5256,202752,-2094840,
 26943840,-534147120,7877529840,-41350410360,
 -804692528640,16885512006720,-166653340523520,
 3621340758072960,-48704381263560960,
 -2035821123825148800,99959690241598844160,
 -1979439236443512264960]

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Last modified April 23 03:29 EDT 2024. Contains 371906 sequences. (Running on oeis4.)