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A321143
as a simple table
n
a(n)
0
1
1
1
2
4
3
10
4
31
5
87
6
272
7
835
8
2673
9
8805
10
29583
[1,1,4,10,31,87,272,835,2673,8805,29583]
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Last modified August 17 13:03 EDT 2024. Contains 375210 sequences. (Running on oeis4.)