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A361866
as a simple table
n
a(n)
0
1
1
1
2
1
3
3
4
8
5
22
6
75
7
267
8
1119
9
4965
10
22694
11
117090
12
670621
13
3866503
[1,1,1,3,8,22,75,267,1119,4965,22694,117090, 670621,3866503]
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Last modified August 30 07:09 EDT 2024. Contains 375532 sequences. (Running on oeis4.)