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A006759 as a simple table

n a(n)
1 0
2 0
3 0
4 3
5 17
6 131
7 915
8 6553
9 47026
10 341888
11 2505449
12 18534827
13 138224058
14 1038594326
15 7856087894
16 59782042225
17 457359506070
18 3515816578512
19 27143401299351
20 210372490707568

[0,0,0,3,17,131,915,6553,47026,341888,2505449,
 18534827,138224058,1038594326,7856087894,
 59782042225,457359506070,3515816578512,
 27143401299351,210372490707568]

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Last modified April 20 00:03 EDT 2024. Contains 371798 sequences. (Running on oeis4.)