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A179684 as a simple table

n a(n)
0 1
1 0
2 1
3 1
4 5
5 17
6 90
7 542
8 3962
9 33554
10 324489
11 3520885
12 42300709
13 556530474
14 7945317484
15 122145525208
16 2008827010000
17 35143981009968 

[1,0,1,1,5,17,90,542,3962,33554,324489,3520885,
 42300709,556530474,7945317484,122145525208,
 2008827010000,35143981009968]

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Last modified June 3 16:13 EDT 2024. Contains 373063 sequences. (Running on oeis4.)