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A003216 as a simple table

n a(n)
1 1
2 0
3 1
4 3
5 8
6 48
7 383
8 6196
9 177083
10 9305118
11 883156024
12 152522187830
13 48322518340547 

[1,0,1,3,8,48,383,6196,177083,9305118,883156024,
 152522187830,48322518340547]

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Last modified April 25 05:18 EDT 2024. Contains 371964 sequences. (Running on oeis4.)