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A002771 as a simple table

n a(n)
1 1
2 2
3 4
4 13
5 41
6 226
7 1072
8 9374
9 60958
10 723916
11 5892536
12 86402812
13 837641884
14 14512333928
15 162925851376
16 3252104882056
17 41477207604872
18 937014810365584
19 13380460644770848
20 337457467862898896
21 5333575373478669136
22 148532521250931168352

[1,2,4,13,41,226,1072,9374,60958,723916,5892536,
 86402812,837641884,14512333928,162925851376,
 3252104882056,41477207604872,937014810365584,
 13380460644770848,337457467862898896,
 5333575373478669136,148532521250931168352]

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Last modified April 24 14:09 EDT 2024. Contains 371960 sequences. (Running on oeis4.)