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A038143 as a simple table

n a(n)
1 0
2 0
3 0
4 0
5 0
6 1
7 5
8 35
9 200
10 1121
11 5919
12 30509
13 153187
14 756825
15 3688195

[0,0,0,0,0,1,5,35,200,1121,5919,30509,153187,
 756825,3688195]

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Last modified April 23 02:23 EDT 2024. Contains 371906 sequences. (Running on oeis4.)