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A000609 as a simple table

n a(n)
0 2
1 4
2 14
3 104
4 1882
5 94572
6 15028134
7 8378070864
8 17561539552946
9 144130531453121108

[2,4,14,104,1882,94572,15028134,8378070864,
 17561539552946,144130531453121108]

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Last modified April 18 04:28 EDT 2024. Contains 371767 sequences. (Running on oeis4.)