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A298361
as a simple table
n
a(n)
3
1
4
1
5
1
6
2
7
5
8
14
9
50
10
233
11
1249
12
7595
13
49566
14
339712
15
2405167
16
17412878
17
127855172
18
947394711
[1,1,1,2,5,14,50,233,1249,7595,49566,339712, 2405167,17412878,127855172,947394711]