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A243796 as a simple table

n a(n)
1 1
2 0
3 1
4 2
5 4
6 15
7 58
8 360
9 2793
10 28761
11 369545
12 5914974
13 116089531
14 2816695796 

[1,0,1,2,4,15,58,360,2793,28761,369545,5914974,
 116089531,2816695796]

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Last modified April 25 07:53 EDT 2024. Contains 371964 sequences. (Running on oeis4.)