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A323851
as a simple table
n
a(n)
1
0
2
0
3
0
4
1
5
2
6
12
7
51
8
229
9
969
10
4098
11
16867
12
68925
13
278907
14
1123302
15
4507640
[0,0,0,1,2,12,51,229,969,4098,16867,68925,278907, 1123302,4507640]
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Last modified May 4 12:19 EDT 2024. Contains 372243 sequences. (Running on oeis4.)