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A004104 as a simple table

n a(n)
1 1
2 1
3 2
4 6
5 20
6 86
7 662
8 8120
9 171526
10 5909259
11 348089533
12 33883250874
13 5476590066777
14 1490141905609371
15 666003784522738152
16 509204473666338077658
17 636051958071749028811326
18 1375164117171886868027357906
19 4844133410739656724629165903483
20 29777568550007746192195431057341474

[1,1,2,6,20,86,662,8120,171526,5909259,348089533,
 33883250874,5476590066777,1490141905609371,
 666003784522738152,509204473666338077658,
 636051958071749028811326,
 1375164117171886868027357906,
 4844133410739656724629165903483,
 29777568550007746192195431057341474]

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Last modified June 11 16:25 EDT 2024. Contains 373315 sequences. (Running on oeis4.)