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A254317
as a simple table
n
a(n)
1
1
2
6
3
26
4
102
5
510
6
3210
7
22890
8
153690
9
1507290
10
15618090
[1,6,26,102,510,3210,22890,153690,1507290, 15618090]
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Last modified April 23 20:33 EDT 2024. Contains 371916 sequences. (Running on oeis4.)
