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A028302 as a simple table

n a(n)
1 2
2 6
3 25
4 98
5 462
6 1716
7 7293
8 27170
9 111826
10 487084
11 1822366
12 7696444
13 30458900
14 115000920
15 455657715
16 1873956510
17 7649042610
18 29135960700
19 118406633730
20 466052549820
21 1786037492460
22 7227122527560
23 28473947932950

[2,6,25,98,462,1716,7293,27170,111826,487084,
 1822366,7696444,30458900,115000920,455657715,
 1873956510,7649042610,29135960700,118406633730,
 466052549820,1786037492460,7227122527560,
 28473947932950]

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Last modified April 23 11:07 EDT 2024. Contains 371905 sequences. (Running on oeis4.)