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A320521
as a simple table
n
a(n)
1
2
2
10
3
50
4
230
5
1150
6
5050
7
22310
8
106030
9
510050
10
2065450
11
10236350
[2,10,50,230,1150,5050,22310,106030,510050, 2065450,10236350]
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Last modified April 24 12:31 EDT 2024. Contains 371937 sequences. (Running on oeis4.)