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A226594
as a simple table
n
a(n)
0
1
1
1
2
1
3
1
4
2
5
3
6
6
7
11
8
22
9
42
10
102
11
204
12
488
13
1078
14
2723
15
6403
16
16479
17
40313
18
106135
19
271295
20
724455
[1,1,1,1,2,3,6,11,22,42,102,204,488,1078,2723, 6403,16479,40313,106135,271295,724455]