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A216893
as a simple table
n
a(n)
1
2
2
8
3
21
4
55
5
377
6
610
7
17711
8
121393
9
832040
10
5702887
11
19740274219868223167
[2,8,21,55,377,610,17711,121393,832040,5702887, 19740274219868223167]
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Last modified April 24 00:30 EDT 2024. Contains 371917 sequences. (Running on oeis4.)