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A357599 as a simple table

n a(n)
0 0
1 1
2 -1
3 6
4 -30
5 180
6 -1260
7 10080
8 -90720
9 907200
10 -9979200
11 119750400
12 -1556755200
13 21794572800
14 -326918592000
15 5230697472000
16 -88921857024000
17 1600593426432000
18 -30411275102208000
19 608225502044160000
20 -12772735542927360000
21 281000181944401920000

[0,1,-1,6,-30,180,-1260,10080,-90720,907200,
 -9979200,119750400,-1556755200,21794572800,
 -326918592000,5230697472000,-88921857024000,
 1600593426432000,-30411275102208000,
 608225502044160000,-12772735542927360000,
 281000181944401920000]

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Last modified April 20 12:36 EDT 2024. Contains 371844 sequences. (Running on oeis4.)