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A074099
as a simple table
n
a(n)
1
1
2
1
3
1
4
2
5
3
6
5
7
9
8
16
9
28
10
51
11
93
12
170
13
315
14
585
15
1092
16
2048
17
3855
18
7281
19
13797
20
26214
21
49932
[1,1,1,2,3,5,9,16,28,51,93,170,315,585,1092,2048, 3855,7281,13797,26214,49932]