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A250217
as a simple table
n
a(n)
1
1
2
11
3
18
4
23
5
25
6
37
7
68
8
113
9
115
10
179
11
229
12
421
13
545
14
1129
15
1451
16
1481
17
1847
18
1987
19
3099
20
3329
21
4391
[1,11,18,23,25,37,68,113,115,179,229,421,545,1129, 1451,1481,1847,1987,3099,3329,4391]