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A192730 as a simple table

n a(n)
0 1
1 1
2 4
3 23
4 151
5 1075
6 8075
7 62996
8 505501
9 4145684
10 34594540
11 292794156
12 2507383158
13 21686318745
14 189162110341
15 1662142617881
16 14698913545378
17 130723572694407
18 1168419986539867
19 10490326933563842
20 94564400499455397
21 855552893388047193

[1,1,4,23,151,1075,8075,62996,505501,4145684,
 34594540,292794156,2507383158,21686318745,
 189162110341,1662142617881,14698913545378,
 130723572694407,1168419986539867,
 10490326933563842,94564400499455397,
 855552893388047193]

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Last modified July 30 10:27 EDT 2021. Contains 346359 sequences. (Running on oeis4.)