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A003228 as a simple table

n a(n)
1 1
2 2
3 2
4 5
5 9
6 21
7 43
8 101
9 226
10 556
11 1333
12 3365
13 8500
14 22007
15 57258
16 151264
17 401761
18 1077063
19 2902599
20 7871250
21 21440642
22 58672589
23 161155637
24 444240627
25 1228400744
26 3406668865
27 9472308269
28 26402207803
29 73755064178

[1,2,2,5,9,21,43,101,226,556,1333,3365,8500,22007,
 57258,151264,401761,1077063,2902599,7871250,
 21440642,58672589,161155637,444240627,1228400744,
 3406668865,9472308269,26402207803,73755064178]

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Last modified December 10 20:53 EST 2019. Contains 329909 sequences. (Running on oeis4.)