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A191637 as a simple table

n a(n)
1 1
2 3
3 9
4 28
5 93
6 315
7 1092
8 3855
9 13797
10 49932
11 182361
12 671088
13 2485513
14 9256395
15 34636833
16 130150524
17 490853405
18 1857283155
19 7048151460
20 26817356775
21 102280151421
22 390937467653
23 1497207322929
24 5744387279809
25 22076468761620
26 84973577874915
27 327534518354217

[1,3,9,28,93,315,1092,3855,13797,49932,182361,
 671088,2485513,9256395,34636833,130150524,
 490853405,1857283155,7048151460,26817356775,
 102280151421,390937467653,1497207322929,
 5744387279809,22076468761620,84973577874915,
 327534518354217]

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Last modified February 22 08:35 EST 2020. Contains 332133 sequences. (Running on oeis4.)