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A084781 as a simple table

n a(n)
0 1
1 1
2 3
3 10
4 35
5 132
6 519
7 2105
8 8746
9 37033
10 159229
11 693343
12 3051290
13 13550083
14 60642857
15 273248824
16 1238567263
17 5643738611
18 25837579578
19 118785766683
20 548182891007
21 2538522337214
22 11792272546723
23 54936210525388

[1,1,3,10,35,132,519,2105,8746,37033,159229,
 693343,3051290,13550083,60642857,273248824,
 1238567263,5643738611,25837579578,118785766683,
 548182891007,2538522337214,11792272546723,
 54936210525388]

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Last modified July 12 13:15 EDT 2020. Contains 335661 sequences. (Running on oeis4.)