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A121949
as a simple table
n
a(n)
1
1
2
2
3
10
4
43
5
210
6
1026
7
5130
8
25770
9
130350
10
661458
[1,2,10,43,210,1026,5130,25770,130350,661458]
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Last modified August 20 00:15 EDT 2024. Contains 375310 sequences. (Running on oeis4.)