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A123426 as a simple table

n a(n)
1 1
2 2
3 4
4 11
5 33
6 145
7 848
8 7111
9 77067
10 1007506
11 15150150
12 259469001 

[1,2,4,11,33,145,848,7111,77067,1007506,15150150,
 259469001]

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