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A123459 as a simple table

n a(n)
1 1
2 2
3 4
4 11
5 33
6 145
7 840
8 6757
9 66677
10 742244 

[1,2,4,11,33,145,840,6757,66677,742244]

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Last modified April 23 18:16 EDT 2024. Contains 371916 sequences. (Running on oeis4.)