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A316222 as a simple table

n a(n)
1 1
2 5
3 20
4 74
5 258
6 855
7 2736
8 8447

[1,5,20,74,258,855,2736,8447]

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Last modified April 19 11:31 EDT 2024. Contains 371792 sequences. (Running on oeis4.)