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A216889
as a simple table
n
a(n)
1
0
2
1
3
2
4
5
5
13
6
14
7
38
8
200
9
248
10
884
11
1004
12
1253
13
1634
14
3305
15
3521
16
9601
17
19784
18
72697
[0,1,2,5,13,14,38,200,248,884,1004,1253,1634,3305, 3521,9601,19784,72697]