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A128238 as a simple table

n a(n)
3 0
4 0
5 1
6 2
7 8
8 26
9 101
10 396
11 1744
12 8531
13 47803
14 308086
15 2300756
16 19909540
17 199365557 

[0,0,1,2,8,26,101,396,1744,8531,47803,308086,
 2300756,19909540,199365557]

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Last modified April 18 22:18 EDT 2024. Contains 371782 sequences. (Running on oeis4.)