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A131842 as a simple table

n a(n)
0 1
1 1
2 2
3 6
4 20
5 96
6 582
7 4672
8 47330
9 595680
10 9088942
11 164702708
12 3483060060
13 84705352206
14 2339732572312
15 72635597193630
16 2511496037777828
17 95965484116697442
18 4024669707807276532
19 184149183428282681030
20 9143767110701151656280

[1,1,2,6,20,96,582,4672,47330,595680,9088942,
 164702708,3483060060,84705352206,2339732572312,
 72635597193630,2511496037777828,95965484116697442,
 4024669707807276532,184149183428282681030,
 9143767110701151656280]

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Last modified March 28 20:05 EDT 2024. Contains 371254 sequences. (Running on oeis4.)