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A366155 as a simple table

n a(n)
0 1
1 0
2 0
3 2
4 24
5 240
6 2440
7 26880
8 329280
9 4518080
10 69148800
11 1168675200
12 21564188800
13 430048819200
14 9195964377600
15 209593877292800
16 5068718054400000
17 129599032442880000
18 3492894468128665600
19 98968805893769011200
20 2940975338620999680000
21 91452266705317726208000
22 2969664371124258103296000

[1,0,0,2,24,240,2440,26880,329280,4518080,
 69148800,1168675200,21564188800,430048819200,
 9195964377600,209593877292800,5068718054400000,
 129599032442880000,3492894468128665600,
 98968805893769011200,2940975338620999680000,
 91452266705317726208000,2969664371124258103296000]

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Last modified May 17 15:24 EDT 2024. Contains 372600 sequences. (Running on oeis4.)