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A032200 as a simple table

n a(n)
1 1
2 1
3 2
4 4
5 9
6 20
7 51
8 128
9 345
10 940
11 2632
12 7450
13 21434
14 62174
15 182146
16 537369
17 1596133
18 4767379
19 14312919
20 43162856
21 130695821
22 397184252
23 1211057426
24 3703794849
25 11358759346
26 34923477315
27 107627138308
28 332404636811

[1,1,2,4,9,20,51,128,345,940,2632,7450,21434,
 62174,182146,537369,1596133,4767379,14312919,
 43162856,130695821,397184252,1211057426,
 3703794849,11358759346,34923477315,107627138308,
 332404636811]

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Last modified March 26 05:43 EDT 2019. Contains 321481 sequences. (Running on oeis4.)