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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.)