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A273030 as a simple table

n a(n)
1 1
2 2
3 7
4 34
5 189
6 1132
7 7134
8 46642
9 313468
10 2152318
11 15032964
12 106474940
13 762949599
14 5520867592
15 40287276592
16 296133267074
17 2190621494149
18 16296005417256
19 121830586282884
20 914879338223438
21 6897776776248601
22 52194621068657552
23 396250628678762793
24 3017289164647604068
25 23038674915285329005
26 176358202113609998074
27 1353151958449050620098
28 10404826279377895563688
29 80166547565004475870252
30 618815710970799456428120

[1,2,7,34,189,1132,7134,46642,313468,2152318,
 15032964,106474940,762949599,5520867592,
 40287276592,296133267074,2190621494149,
 16296005417256,121830586282884,914879338223438,
 6897776776248601,52194621068657552,
 396250628678762793,3017289164647604068,
 23038674915285329005,176358202113609998074,
 1353151958449050620098,10404826279377895563688,
 80166547565004475870252,618815710970799456428120]

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Last modified February 25 12:00 EST 2021. Contains 341606 sequences. (Running on oeis4.)