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A364281 as a simple table

n a(n)
0 1
1 1
2 1
3 4
4 10
5 48
6 252
7 1584
8 10800
9 93600
10 823680
11 8588160
12 93381120
13 1158312960
14 14805504000
15 215028172800
16 3159494553600
17 51973589606400
18 873152856576000
19 16058241239040000
20 300754643245056000
21 6159522883497984000
22 127439374149255168000

[1,1,1,4,10,48,252,1584,10800,93600,823680,
 8588160,93381120,1158312960,14805504000,
 215028172800,3159494553600,51973589606400,
 873152856576000,16058241239040000,
 300754643245056000,6159522883497984000,
 127439374149255168000]

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Last modified August 24 15:10 EDT 2024. Contains 375417 sequences. (Running on oeis4.)