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A100912
as a simple table
n
a(n)
1
1
2
2
3
4
4
10
5
13
6
19
7
20
8
34
9
37
10
40
11
317
12
1258
13
1651
14
3370
15
3640
16
3715
17
6818
18
6925
19
8050
20
18193
[1,2,4,10,13,19,20,34,37,40,317,1258,1651,3370, 3640,3715,6818,6925,8050,18193]