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A243241
as a simple table
n
a(n)
1
0
2
0
3
1
4
4
5
19
6
109
7
852
8
11114
9
261077
10
11716566
[0,0,1,4,19,109,852,11114,261077,11716566]
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Last modified April 19 16:52 EDT 2024. Contains 371794 sequences. (Running on oeis4.)