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A219663
as a simple table
n
a(n)
1
0
2
1
3
3
4
9
5
34
6
160
7
1106
8
8806
9
68835
10
598355
11
6124625
12
71839629
13
913850187
14
12304189279
15
175964165619
[0,1,3,9,34,160,1106,8806,68835,598355,6124625, 71839629,913850187,12304189279,175964165619]
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Last modified September 3 23:03 EDT 2024. Contains 375679 sequences. (Running on oeis4.)