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A217720 as a simple table

n a(n)
1 2
2 8
3 28
4 116
5 474
6 2001
7 8508
8 37162
9 163730
10 729683
11 3269602
12 14773831 

[2,8,28,116,474,2001,8508,37162,163730,729683,
 3269602,14773831]

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Last modified April 16 12:52 EDT 2024. Contains 371711 sequences. (Running on oeis4.)