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A291632 as a simple table

n a(n)
0 0
1 1
2 2
3 9
4 28
5 125
6 486
7 2317
8 10424
9 53433
10 267850
11 1470161
12 8032212
13 46925749
14 275437358
15 1702883925
16 10630404976
17 69192858737
18 455957606034
19 3110617216153
20 21512638153100
21 153234193139181
22 1107087138215542
23 8206182165264029
24 61703155328534568

[0,1,2,9,28,125,486,2317,10424,53433,267850,
 1470161,8032212,46925749,275437358,1702883925,
 10630404976,69192858737,455957606034,
 3110617216153,21512638153100,153234193139181,
 1107087138215542,8206182165264029,
 61703155328534568]

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Last modified December 2 23:09 EST 2022. Contains 358510 sequences. (Running on oeis4.)